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AUSCERT External Security Bulletin Redistribution
ESB-2017.1841
Multiple vulnerabilities have been identified in Cisco IOS
and IOS XE Software
27 July 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco IOS and IOS XE
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Resolution: None
CVE Names: CVE-2017-6665 CVE-2017-6664 CVE-2017-6663
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-aniacp
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anicrl
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anidos
Comment: This bulletin contains three (3) Cisco Systems security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Security Advisory
Cisco IOS and IOS XE Software Autonomic Control Plane Channel Information
Disclosure Vulnerability
High
Advisory ID:
cisco-sa-20170726-aniacp
First Published:
2017 July 26 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCvd51214
CVE-2017-6665
CWE-200
CVSS Score:
Base 7.4, Temporal 7.4
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
CVE-2017-6665
CWE-200
Summary
A vulnerability in the Autonomic Networking feature of Cisco IOS Software
and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker
to reset the Autonomic Control Plane (ACP) of an affected system and view
ACP packets that are transferred in clear text within an affected system.
The vulnerability is due to unknown reasons. An attacker could exploit this
vulnerability by capturing and replaying ACP packets that are transferred
within an affected system. A successful exploit could allow the attacker to
reset the ACP of an affected system, resulting in a denial of service (DoS)
condition. A successful exploit could also allow the attacker to capture
and view ACP packets, which should have been encrypted over the ACP, in
clear text.
Cisco has not released software updates that address this vulnerability.
There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-aniacp
Affected Products
Vulnerable Products
This vulnerability affects devices that are running any release of
Cisco IOS or Cisco IOS XE Software that supports Autonomic Networking and
are configured to use Autonomic Networking.
For more information about which Cisco IOS and IOS XE Software releases are
vulnerable, see the Fixed Software section of this advisory.
Assessing the Autonomic Networking Configuration
To determine whether a device is configured to use Autonomic Networking,
administrators can use the show running-config | include ^autonomic command
in the CLI. The following example shows the output of the command for a
device that is running Cisco IOS Software and is configured to use
Autonomic Networking:
Router# show running-config | include ^autonomic
autonomic
Router#
If a device is not configured to use Autonomic Networking, the command will
not return any output.
Determining the Cisco IOS Software Release
To determine which Cisco IOS Software release is running on a device,
administrators can log in to the device, use the show version command in
the CLI, and then refer to the system banner that appears. If the device is
running Cisco IOS Software, the system banner displays text similar to
Cisco Internetwork Operating System Software or Cisco IOS Software. The
banner also displays the installed image name in parentheses, followed by
the Cisco IOS Software release number and release name. Some Cisco devices
do not support the show version command or may provide different output.
The following example identifies a Cisco product that is running Cisco IOS
Software Release 15.5(2)T1 with an installed image name of
C2951-UNIVERSALK9-M:
Router> show version
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.5(2)T1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Mon 22-Jun-15 09:32 by prod_rel_team
.
.
.
For information about the naming and numbering conventions for Cisco IOS
Software releases, see White Paper: Cisco IOS and NX-OS Software Reference
Guide.
Determining the Cisco IOS XE Software Release
To determine which Cisco IOS XE Software release is running on a device,
administrators can log in to the device, use the show version command in
the CLI, and then refer to the system banner that appears. If the device is
running Cisco IOS XE Software, the system banner displays Cisco IOS XE
Software or similar text.
The following example shows the output of the show version command on a
device that is running Cisco IOS XE Software Release 3.16.1aS:
Router> show version
Cisco IOS XE Software, Version 03.16.01a.S - Extended Support Release
Cisco IOS Software, ASR1000 Software (PPC_LINUX_IOSD-ADVENTERPRISEK9-M), Version 15.5(3)S1a, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 04-Nov-15 17:40 by mcpre
.
.
.
For information about the naming and numbering conventions for Cisco IOS XE
Software releases, see White Paper: Cisco IOS and NX-OS Software Reference
Guide.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco IOS XR
Software or Cisco NX-OS Software.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
Cisco has not released software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
http://www.cisco.com/en/US/docs/general/warranty/English/EU1KEN_.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page, to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
http://www.cisco.com/en/US/support/tsd_cisco_worldwide_contacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
To help ensure a complete upgrade solution, customers may consider that
this advisory is part of a collection that includes the following
advisories:
cisco-sa-20170726-aniacp: Cisco IOS and IOS XE Software Autonomic
Control Plane Channel Information Disclosure Vulnerability
cisco-sa-20170726-anicrl: Cisco IOS XE Software Autonomic Networking
Infrastructure Certificate Revocation Vulnerability
cisco-sa-20170726-anidos: Cisco IOS and IOS XE Software Autonomic
Networking Infrastructure Denial of Service Vulnerability
To help customers determine their exposure to vulnerabilities in Cisco IOS
and IOS XE Software, Cisco provides a tool, the Cisco IOS Software Checker,
that identifies any Cisco Security Advisories that impact a specific
software release and the earliest release that fixes the vulnerabilities
described in each advisory (First Fixed). If applicable, the tool also
returns the earliest release that fixes all the vulnerabilities described
in all the advisories identified (Combined First Fixed).
Customers can use this tool to perform the following tasks:
Initiate a search by choosing one or more releases from a drop-down
menu or uploading a file from a local system for the tool to parse
Enter the output of the show version command for the tool to parse
Create a custom search by including all previously published Cisco
Security Advisories, a specific advisory, or all advisories in the most
recent bundled publication
To determine whether a release is affected by any published Cisco Security
Advisory, use the Cisco IOS Software Checker on Cisco.com or enter a
Cisco IOS Software or Cisco IOS XE Software releasefor example, 15.1(4)M2
or 3.1.4Sin the following field:
[ ] [Check]
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any malicious use of the vulnerability that is described in this advisory.
Omar Eissa of ERNW disclosed this vulnerability during the Black Hat USA
2017 conference.
Source
This vulnerability was reported to Cisco by Omar Eissa of ERNW.
Cisco Security Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy. This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Subscribe to Cisco Security Notifications
Subscribe
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-aniacp
Revision History
Version Description Section Status Date
1.0 Initial public release. Final 2017-July-26
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information
or contain factual errors. The information in this document is intended for
end users of Cisco products.
Cisco Security Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy. This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Subscribe to Cisco Security Notifications
Subscribe
- ---
Cisco Security Advisory
Cisco IOS XE Software Autonomic Networking Infrastructure Certificate
Revocation Vulnerability
Medium
Advisory ID:
cisco-sa-20170726-anicrl
First Published:
2017 July 26 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCvd22328
CVE-2017-6664
CWE-264
CVSS Score:
Base 6.5, Temporal 6.5
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N/E:X/RL:X/RC:X
CVE-2017-6664
CWE-264
Summary
A vulnerability in the Autonomic Networking feature of Cisco IOS XE
Software could allow an unauthenticated, remote, autonomic node to access
the Autonomic Networking infrastructure of an affected system, after the
certificate for the autonomic node has been revoked.
The vulnerability exists because the affected software does not transfer
certificate revocation lists (CRLs) across Autonomic Control Plane (ACP)
channels. An attacker could exploit this vulnerability by connecting an
autonomic node, which has a known and revoked certificate, to the autonomic
domain of an affected system. A successful exploit could allow the attacker
to insert a previously trusted autonomic node into the autonomic domain of
an affected system after the certificate for the node has been revoked.
There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anicrl
Affected Products
Vulnerable Products
At the time of publication, this vulnerability affected devices that are
running Release 16.x of Cisco IOS XE Software and are configured to use
Autonomic Networking. This vulnerability does not affect devices that are
running an earlier release of Cisco IOS XE Software or devices that are not
configured to use Autonomic Networking.
For more information about which Cisco IOS XE Software releases are
vulnerable, see the Fixed Software section of this advisory.
Assessing the Autonomic Networking Configuration
To determine whether a device is configured to use Autonomic Networking,
administrators can use the show running-config | include ^autonomic command
in the CLI. The following example shows the output of the command for a
device that is running Cisco IOS XE Software and is configured to use
Autonomic Networking:
Router# show running-config | include ^autonomic
autonomic
Router#
If a device is not configured to use Autonomic Networking, the command will
not return any output.
Determining the Cisco IOS XE Software Release
To determine which Cisco IOS XE Software release is running on a device,
administrators can log in to the device, use the show version command in
the CLI, and then refer to the system banner that appears. If the device is
running Cisco IOS XE Software, the system banner displays Cisco IOS XE
Software or similar text.
The following example shows the output of the show version command on a
device that is running Cisco IOS XE Software Release 3.16.1aS:
Router> show version
Cisco IOS XE Software, Version 03.16.01a.S - Extended Support Release
Cisco IOS Software, ASR1000 Software (PPC_LINUX_IOSD-ADVENTERPRISEK9-M), Version 15.5(3)S1a, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 04-Nov-15 17:40 by mcpre
.
.
.
For information about the naming and numbering conventions for Cisco IOS XE
Software releases, see White Paper: Cisco IOS and NX-OS Software Reference
Guide.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco IOS
Software, Cisco IOS XR Software, or Cisco NX-OS Software.
Workarounds
There are no workarounds that address this vulnerability. However,
administrators can mitigate this vulnerability by doing the following for
autonomic nodes that were disconnected from the Autonomic Network domain:
Ensure that the certificate and key information for the node is deleted
properly
Update the Autonomic Networking whitelist file on the registrar
These actions will prevent the autonomic node from re-establishing
connectivity to the Autonomic Network domain of an affected system.
Fixed Software
Cisco has not released software updates that address the vulnerability
described in this advisory.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page, to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Fixed Releases
To help ensure a complete upgrade solution, customers may consider that
this advisory is part of a collection that includes the following
advisories:
cisco-sa-20170726-aniacp: Cisco IOS and IOS XE Software Autonomic
Control Plane Channel Information Disclosure Vulnerability
cisco-sa-20170726-anicrl: Cisco IOS XE Software Autonomic Networking
Infrastructure Certificate Revocation Vulnerability
cisco-sa-20170726-anidos: Cisco IOS and IOS XE Software Autonomic
Networking Infrastructure Denial of Service Vulnerability
To help customers determine their exposure to vulnerabilities in Cisco IOS
and IOS XE Software, Cisco provides a tool, the Cisco IOS Software Checker,
that identifies any Cisco Security Advisories that impact a specific
software release and the earliest release that fixes the vulnerabilities
described in each advisory (First Fixed). If applicable, the tool also
returns the earliest release that fixes all the vulnerabilities described
in all the advisories identified (Combined First Fixed).
Customers can use this tool to perform the following tasks:
Initiate a search by choosing one or more releases from a drop-down
menu or uploading a file from a local system for the tool to parse
Enter the output of the show version command for the tool to parse
Create a custom search by including all previously published Cisco
Security Advisories, a specific advisory, or all advisories in the most
recent bundled publication
To determine whether a release is affected by any published Cisco Security
Advisory, use the Cisco IOS Software Checker on Cisco.com or enter a
Cisco IOS Software or Cisco IOS XE Software releasefor example, 15.1(4)M2
or 3.1.4Sin the following field:
[ ] [Check]
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any malicious use of the vulnerability that is described in this advisory.
Omar Eissa of ERNW disclosed this vulnerability during the Black Hat USA
2017 conference.
Source
This vulnerability was reported to Cisco by Omar Eissa of ERNW.
Cisco Security Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy. This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Subscribe to Cisco Security Notifications
Subscribe
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anicrl
Revision History
Version Description Section Status Date
1.0 Initial public release. Final 2017-July-26
Show Less
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information
or contain factual errors. The information in this document is intended for
end users of Cisco products.
Cisco Security Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy. This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Subscribe to Cisco Security Notifications
Subscribe
- ---
Cisco Security Advisory
Cisco IOS and IOS XE Software Autonomic Networking Infrastructure Denial of
Service Vulnerability
High
Advisory ID:
cisco-sa-20170726-anidos
First Published:
2017 July 26 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCvd88936
CVE-2017-6663
CWE
CVSS Score:
Base 7.4, Temporal 7.4
CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
CVE-2017-6663
Summary
A vulnerability in the Autonomic Networking feature of Cisco IOS Software
and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker
to cause autonomic nodes of an affected system to reload, resulting in a
denial of service (DoS) condition.
The vulnerability is due to an unknown condition in the Autonomic
Networking code of the affected software. An attacker could exploit this
vulnerability by replaying captured packets to reset the Autonomic Control
Plane (ACP) channel of an affected system. A successful exploit could allow
the attacker to reset the ACP channel of an affected system and
consequently cause the affected device to reload, resulting in a DoS
condition.
Cisco has not released software updates that address this vulnerability.
There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anidos
Affected Products
Vulnerable Products
This vulnerability affects devices that are running any release of
Cisco IOS or Cisco IOS XE Software that supports Autonomic Networking and
are configured to use Autonomic Networking.
For more information about which Cisco IOS and IOS XE Software releases are
vulnerable, see the Fixed Software section of this advisory.
Assessing the Autonomic Networking Configuration
To determine whether a device is configured to use Autonomic Networking,
administrators can use the show running-config | include ^autonomic command
in the CLI. The following example shows the output of the command for a
device that is running Cisco IOS Software and is configured to use
Autonomic Networking:
Router# show running-config | include ^autonomic
autonomic
Router#
If a device is not configured to use Autonomic Networking, the command will
not return any output.
Determining the Cisco IOS Software Release
To determine which Cisco IOS Software release is running on a device,
administrators can log in to the device, use the show version command in
the CLI, and then refer to the system banner that appears. If the device is
running Cisco IOS Software, the system banner displays text similar to
Cisco Internetwork Operating System Software or Cisco IOS Software. The
banner also displays the installed image name in parentheses, followed by
the Cisco IOS Software release number and release name. Some Cisco devices
do not support the show version command or may provide different output.
The following example identifies a Cisco product that is running Cisco IOS
Software Release 15.5(2)T1 with an installed image name of
C2951-UNIVERSALK9-M:
Router> show version
Cisco IOS Software, C2951 Software (C2951-UNIVERSALK9-M), Version 15.5(2)T1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Mon 22-Jun-15 09:32 by prod_rel_team
.
.
.
For information about the naming and numbering conventions for Cisco IOS
Software releases, see White Paper: Cisco IOS and NX-OS Software Reference
Guide.
Determining the Cisco IOS XE Software Release
To determine which Cisco IOS XE Software release is running on a device,
administrators can log in to the device, use the show version command in
the CLI, and then refer to the system banner that appears. If the device is
running Cisco IOS XE Software, the system banner displays Cisco IOS XE
Software or similar text.
The following example shows the output of the show version command on a
device that is running Cisco IOS XE Software Release 3.16.1aS:
Router> show version
Cisco IOS XE Software, Version 03.16.01a.S - Extended Support Release
Cisco IOS Software, ASR1000 Software (PPC_LINUX_IOSD-ADVENTERPRISEK9-M), Version 15.5(3)S1a, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2015 by Cisco Systems, Inc.
Compiled Wed 04-Nov-15 17:40 by mcpre
.
.
.
For information about the naming and numbering conventions for Cisco IOS XE
Software releases, see White Paper: Cisco IOS and NX-OS Software Reference
Guide.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco IOS XR
Software or Cisco NX-OS Software.
Workarounds
There are no workarounds that address this vulnerability.
Fixed Software
Cisco has not released software updates that address the vulnerability
described in this advisory. Customers may only install and expect support
for software versions and feature sets for which they have purchased a
license. By installing, downloading, accessing, or otherwise using such
software upgrades, customers agree to follow the terms of the Cisco
software license:
http://www.cisco.com/en/US/docs/general/warranty/English/ EU1KEN_.html
Additionally, customers may only download software for which they have a
valid license, procured from Cisco directly, or through a Cisco authorized
reseller or partner. In most cases this will be a maintenance upgrade to
software that was previously purchased. Free security software updates do
not entitle customers to a new software license, additional software
feature sets, or major revision upgrades.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page, to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Customers Without Service Contracts
Customers who purchase directly from Cisco but do not hold a Cisco service
contract and customers who make purchases through third-party vendors but
are unsuccessful in obtaining fixed software through their point of sale
should obtain upgrades by contacting the Cisco TAC:
http://www.cisco.com/en/US/support/tsd_cisco_worldwide_con tacts.html
Customers should have the product serial number available and be prepared
to provide the URL of this advisory as evidence of entitlement to a free
upgrade.
Fixed Releases
To help ensure a complete upgrade solution, customers may consider that
this advisory is part of a collection that includes the following
advisories:
cisco-sa-20170726-aniacp: Cisco IOS and IOS XE Software Autonomic
Control Plane Channel Information Disclosure Vulnerability
cisco-sa-20170726-anicrl: Cisco IOS XE Software Autonomic Networking
Infrastructure Certificate Revocation Vulnerability
cisco-sa-20170726-anidos: Cisco IOS and IOS XE Software Autonomic
Networking Infrastructure Denial of Service Vulnerability
To help customers determine their exposure to vulnerabilities in Cisco IOS
and IOS XE Software, Cisco provides a tool, the Cisco IOS Software Checker,
that identifies any Cisco Security Advisories that impact a specific
software release and the earliest release that fixes the vulnerabilities
described in each advisory (First Fixed). If applicable, the tool also
returns the earliest release that fixes all the vulnerabilities described
in all the advisories identified (Combined First Fixed).
Customers can use this tool to perform the following tasks:
Initiate a search by choosing one or more releases from a drop-down
menu or uploading a file from a local system for the tool to parse
Enter the output of the show version command for the tool to parse
Create a custom search by including all previously published Cisco
Security Advisories, a specific advisory, or all advisories in the most
recent bundled publication
To determine whether a release is affected by any published Cisco Security
Advisory, use the Cisco IOS Software Checker on Cisco.com or enter a
Cisco IOS Software or Cisco IOS XE Software releasefor example, 15.1(4)M2
or 3.1.4Sin the following field:
[ ] [Check]
Exploitation and Public Announcements
The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any malicious use of the vulnerability that is described in this advisory.
Omar Eissa of ERNW disclosed this vulnerability during the Black Hat USA
2017 conference.
Source
This vulnerability was reported to Cisco by Omar Eissa of ERNW.
Cisco Security Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy. This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Subscribe to Cisco Security Notifications
Subscribe
URL
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170726-anidos
Revision History
Version Description Section Status Date
1.0 Initial public release. Final 2017-July-26
Legal Disclaimer
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information
or contain factual errors. The information in this document is intended for
end users of Cisco products.
Cisco Security Vulnerability Policy
To learn about Cisco security vulnerability disclosure policies and
publications, see the Security Vulnerability Policy. This document also
contains instructions for obtaining fixed software and receiving security
vulnerability information from Cisco.
Subscribe to Cisco Security Notifications
Subscribe
- --------------------------END INCLUDED TEXT--------------------
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
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