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AUSCERT External Security Bulletin Redistribution
ESB-2020.3481
Cisco Identity Services Engine Vulnerabilities
8 October 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Identity Services Engine
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Modify Arbitrary Files -- Existing Account
Cross-site Scripting -- Remote with User Interaction
Unauthorised Access -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3589 CVE-2020-3467
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-xxs-mf5cbYx5
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-auth-bypass-uJWqLTZM
Comment: This bulletin contains two (2) Cisco Systems security advisories.
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Cisco Identity Services Engine Cross-Site Scripting Vulnerability
Priority: Medium
Advisory ID: cisco-sa-ise-xxs-mf5cbYx5
First Published: 2020 October 7 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvu33884
CVE-2020-3589
CWE-79
Summary
o A vulnerability in the web-based management interface of Cisco Identity
Services Engine (ISE) Software could allow an authenticated, remote
attacker with administrative credentials to conduct a cross-site scripting
(XSS) attack against a user of the interface.
The vulnerability exists because the web-based management interface does
not properly validate user-supplied input. An attacker could exploit this
vulnerability by injecting malicious code into specific pages of the
interface. A successful exploit could allow the attacker to execute
arbitrary script code in the context of the interface or access sensitive,
browser-based information. To exploit this vulnerability, an attacker would
need to have valid administrative credentials.
Cisco has 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-ise-xxs-mf5cbYx5
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected the following
releases of Cisco ISE Software:
2.2p16 and earlier
2.3p7 and earlier
2.4p12 and earlier
2.6p7 and earlier
2.7p2 and earlier
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Cisco has confirmed that this vulnerability does not affect Cisco ISE
Software releases 3.0 and later.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o When considering software upgrades , customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories 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
At the time of publication, Cisco ISE Software releases 2.2p17 and 2.4p13
contained the fix for this vulnerability.
For information about other fixed software releases, see the Details
section in the bug ID(s) at the top of this advisory.
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o This vulnerability was found during internal security testing.
Cisco Security Vulnerability Policy
o 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.
Related to This Advisory
o Cross-Site Scripting
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-ise-xxs-mf5cbYx5
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-OCT-07 |
+----------+---------------------------+----------+--------+--------------+
- -------------------------------------------------------------------------------
Cisco Identity Services Engine Authorization Bypass Vulnerability
Priority: High
Advisory ID: cisco-sa-ise-auth-bypass-uJWqLTZM
First Published: 2020 October 7 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds availableCisco Bug IDs: CSCvt44829
CVE-2020-3467
CWE-863
CVSS Score:
7.7 AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H/E:X/RL:X/RC:X
Summary
o A vulnerability in the web-based management interface of Cisco Identity
Services Engine (ISE) could allow an authenticated, remote attacker to
modify parts of the configuration on an affected device.
The vulnerability is due to improper enforcement of role-based access
control (RBAC) within the web-based management interface. An attacker could
exploit this vulnerability by sending a crafted HTTP request to an affected
device. A successful exploit could allow the attacker to modify parts of
the configuration. The modified configuration could either allow
unauthorized devices onto the network or prevent authorized devices from
accessing the network. To exploit this vulnerability, an attacker would
need valid Read-Only Administrator credentials.
Cisco has 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-ise-auth-bypass-uJWqLTZM
Affected Products
o Vulnerable Products
This vulnerability affects vulnerable releases of Cisco ISE.
For information about which Cisco software releases are vulnerable, see the
Fixed Software section of this advisory.
Products Confirmed Not Vulnerable
Only products listed in the Vulnerable Products section of this advisory
are known to be affected by this vulnerability.
Workarounds
o There are no workarounds that address this vulnerability.
Fixed Software
o Cisco has released free 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:
https://www.cisco.com/c/en/us/products/end-user-license-agreement.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 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: https://www.cisco.com/c
/en/us/support/web/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
Customers are advised to upgrade to an appropriate fixed software release
as indicated in the following table:
Cisco Identity Services Engine Release First Fixed Release
2.2 and earlier Not vulnerable
2.3 2.4 Patch13
2.4 2.4 Patch13
2.5 2.6 Patch7
2.6 2.6 Patch7
2.7 2.7 Patch2
3.0 Not vulnerable
Exploitation and Public Announcements
o The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
o Cisco would like to thank Sebastian Halter of Deutsche Telekom AG for
reporting this vulnerability.
Cisco Security Vulnerability Policy
o 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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-ise-auth-bypass-uJWqLTZM
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-OCT-07 |
+----------+---------------------------+----------+--------+--------------+
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