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===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2020.1931
Multiple Cisco IOx Application Framework vulnerabilities
4 June 2020
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco IOx Application Framework
Publisher: Cisco Systems
Operating System: Cisco
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Modify Arbitrary Files -- Existing Account
Overwrite Arbitrary Files -- Existing Account
Create Arbitrary Files -- Existing Account
Cross-site Scripting -- Existing Account
Access Confidential Data -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2020-3238 CVE-2020-3237 CVE-2020-3233
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-caf-3dXM8exv
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ioxxss-wc6CqUws
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-caf-file-mVnPqKW9
Comment: This bulletin contains three (3) Cisco Systems security advisories.
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco IOx Application Framework Arbitrary File Creation Vulnerability
Priority: High
Advisory ID: cisco-sa-caf-3dXM8exv
First Published: 2020 June 3 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvr02052
CVE-2020-3238
CWE-20
CVSS Score:
8.1 AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H/E:X/RL:X/RC:X
Summary
A vulnerability in the Cisco Application Framework component of the Cisco
IOx application environment could allow an authenticated, remote attacker
to write or modify arbitrary files in the virtual instance that is running
on the affected device.
The vulnerability is due to insufficient input validation of user-supplied
application packages. An attacker who can upload a malicious package within
Cisco IOx could exploit the vulnerability to modify arbitrary files. The
impacts of a successful exploit are limited to the scope of the virtual
instance and do not affect the device that is hosting Cisco IOx.
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-caf-3dXM8exv
Affected Products
o Vulnerable Products
This vulnerability affects the following Cisco products if they are running
a Cisco IOx Application Framework release earlier than Release 1.9.0:
800 Series Industrial Integrated Services Routers (Industrial ISRs)
800 Series Integrated Services Routers (ISRs)
1000 Series Connected Grid Routers (CGR1000) Compute Module
IC3000 Industrial Compute Gateway
Industrial Ethernet (IE) 4000 Series Switches
IOS XE-based devices:
1000 Series ISRs
4000 Series ISRs
ASR 1000 Series Aggregation Services Routers
Catalyst 9x00 Series Switches
Catalyst IE3400 Rugged Series Switches
Embedded Services 3300 Series Switches
IR510 WPAN Industrial Routers
For information about fixed Cisco platform releases, see the Fixed Software
section of this advisory.
Assess the Device Status
Cisco IOS XE-Based Devices
For the following Cisco IOS XE-based devices, administrators can use the
privileged exec command show iox-service to determine whether the Cisco IOx
Application Framework is enabled on the device:
1000 Series ISRs
4000 Series ISRs
ASR 1000 Series Aggregation Services Routers
Catalyst 9x00 Series Switches
Catalyst IE3400 Rugged Series Switches
Embedded Services 3300 Series Switches
The following output of the show iox-service command shows a device with
the Cisco IOx Application Framework enabled:
switch# show iox-service
.
.
.
IOx Infrastructure Summary:
---------------------------
IOx service (CAF) : Running
IOx service (HA) : Running
IOx service (IOxman) : Running
Libvirtd : Running
Dockerd : Running
The framework is enabled if IOx service (CAF) is in the Running state.
Cisco IE 4000 Series Switches
Administrators can use the privileged exec command show iox detail to
determine whether the Cisco IOx Application Framework is enabled on the
device. The following output of the show iox detail command shows a device
with the Cisco IOx Application Framework enabled:
switch# show iox detail
.
.
.
IOx Processes State:
--------------------
caf : Running
ioxhad : Running
libvirtd : Running
monit : Running
The framework is enabled if caf is in the Running state.
Cisco IR510 WPAN Industrial Router
Administrators who have access to an IOx (Linux) terminal can use following
CLI commands.
The following command checks the IOx release:
#vi /etc/platform/version
The following command checks the Cisco IOx Application Framework status:
#monit summary
Administrators can also check the IOx status by using get TLV from the
Constrained Application Protocol (CoAP) Simple Management Protocol (CSMP)
GUI field tool/device manager or from the Field Network Director (FND). The
numerical value of the TLV for checking the IOx host status is 146 :
146
message IoxHostStatus {
required uint32 status = 1;
optional string version = 2;
optional uint32 upTime = 3;
}
In the preceding TLV, a required uint32 status of 1 indicates that the host
is in an up state and operational.
The following TLV is used to get the IOx host status:
0 - unheard, 1 - up, 2 - down, 3 - stopped, 4 - disabled
version: Client firmware version
upTime: Client's uptime
Cisco CGR1000 Compute Module
Administrators can see the status of the IOx functionality by using the
show iox host list detail | include IOX Server is running CLI command as
shown in the following example:
CGR1000#show iox host list detail | include IOX Server is running
IOX Server is running. Process ID: 305
CGR1000#
Cisco IC3000 Industrial Compute Gateway
On the Cisco IC3000 Industrial Compute Gateway, the Cisco IOx functionality
is enabled by default. Administrators can see the status of the IOx
functionality via the show iox summary CLI command as shown in the
following example:
ic3k#show iox summary
IOx Infrastructure Summary:
---------------------------
eid: IC3000-2C2F-K9+FOC2227Y304
pfm: IC3000-2C2F-K9
s/n: FOC2227Y304
images: Lnx: 1.0.1., IOx: 1.7.0:r/1.7.0.0:fc6e9cf
boot: 2018-09-17 17:37:55
time: 2018-09-18 18:07:28
load: 18:07:28 up 1 day, 29 min, 0 users, load average: 0.32, 0.11, 0.02
memory: ok, used: 481/7854 (6%)
disk: ok, used: /:270305/338869 (79%), /software:57272/87462892 (0%)
process: warning, running: 4/5, failed: sshd
networking: ok
logs: ok, errors: caf (0)
apps: ok,
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.
Customers who do not need to use the Cisco IOx Application Framework can
mitigate this vulnerability by disabling IOx on the device by using the no
iox configuration command.
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 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:
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
Cisco fixed this vulnerability in Cisco IOx Application Framework releases
1.9.0 and later.
The following table indicates the first fixed software release that
supports Cisco IOx Application Framework Release 1.9.0 or later.
Cisco Platform Release That Introduced Support for Cisco IOx
Application Framework Release 1.9.0 or Later
800 Series Industrial ISRs Cisco IOS Software Release 15.9(3)M
800 Series ISRs Not fixed; IOx has reached end of life on the
Cisco 800 Series ISRs.
CGR1000 Compute Module IOx image for CGR1000 Release 1.10.0.6
IC3000 Industrial Compute Industrial Compute Gateway Software Release
Gateway 1.2.1
IE 4000 Series Switches Cisco IOS Software Release 15.2.(7a)E0b
IOS XE devices:
o 1000 Series ISRs
o 4000 Series ISRs
o ASR 1000 Series
Aggregation Services
Routers Cisco IOS XE Software Release 17.2(1)
o Catalyst 9x00 Series
Switches
o Catalyst IE3400 Rugged
Series Switches
o Embedded Services 3300
Series Switches
IR510 WPAN Industrial IR510 Operating System Release 6.1.27
Routers
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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-caf-3dXM8exv
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-JUN-03 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco IOx Application Framework Local Manager Stored Cross-Site Scripting
Vulnerability
Priority: Medium
Advisory ID: cisco-sa-ioxxss-wc6CqUws
First Published: 2020 June 3 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvq71085 CSCvr88502 CSCvr88504 CSCvr88513 CSCvr88539
CVE-2020-3233
CWE-79
CVSS Score:
6.4 AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:X/RL:X/RC:X
Summary
A vulnerability in the web-based Local Manager interface of the Cisco IOx
Application Framework could allow an authenticated, remote attacker to
conduct a stored cross-site scripting (XSS) attack against a user of the
web-based Local Manager interface of an affected device. The attacker must
have valid Local Manager credentials.
The vulnerability is due to insufficient validation of user-supplied input
by the web-based Local Manager interface of the affected software. An
attacker could exploit this vulnerability by injecting malicious code into
a system settings tab. A successful exploit could allow the attacker to
execute arbitrary script code in the context of the affected web interface
or allow the attacker to access sensitive browser-based information.
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-ioxxss-wc6CqUws
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected the following Cisco
products if they were running a Cisco IOx Application Framework release
earlier than Release 1.9.0:
800 Series Industrial Integrated Services Routers (Industrial ISRs)
800 Series Integrated Services Routers (ISRs)
1000 Series Connected Grid Routers (CGR1000) Compute Module
IC3000 Industrial Compute Gateway
Industrial Ethernet (IE) 4000 Series Switches
IOS XE-based devices:
1000 Series ISRs
4000 Series ISRs
ASR 1000 Series Aggregation Services Routers
Catalyst 9x00 Series Switches
Catalyst IE3400 Rugged Series Switches
Embedded Services 3300 Series Switches
IR510 WPAN Industrial Routers
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.
Details
o Cisco IOx Local Manager is a platform-specific application that is
installed on a host system as part of the installation of the Cisco IOx
Application Framework on that device. It provides a web-based user
interface that administrators can use to manage, administer, monitor, and
troubleshoot apps on the host system, and to perform a variety of related
activities.
Workarounds
o There are no workarounds that address this vulnerability.
Customers who do not need to use the Cisco IOx Application Framework can
mitigate this vulnerability by disabling IOx on the device by using the no
iox configuration command.
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 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
At the time of publication, Cisco IOx Application Framework releases 1.9.0
and later contained the fix for this vulnerability.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
The following table indicates the first fixed software release that
supports Cisco IOx Application Framework Release 1.9.0 or later.
Cisco Platform Release That Introduced Support for Cisco IOx
Application Framework Release 1.9.0 or Later
800 Series Industrial ISRs Cisco IOS Software Release 15.9(3)M
800 Series ISRs Not fixed; IOx has reached end of life on the
Cisco 800 Series ISRs.
CGR1000 Compute Module IOx image for CGR1000 Release 1.10.0.6
IC3000 Industrial Compute Industrial Compute Gateway Software Release
Gateway 1.2.1
IE 4000 Series Switches Cisco IOS Software Release 15.2.(7a)E0b
IOS XE devices:
o 1000 Series ISRs
o 4000 Series ISRs
o ASR 1000 Series
Aggregation Services
Routers Cisco IOS XE Software Release 17.2(1)
o Catalyst 9x00 Series
Switches
o Catalyst IE3400 Rugged
Series Switches
o Embedded Services 3300
Series Switches
IR510 WPAN Industrial IR510 Operating System Release 6.1.27
Routers
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 the Singapore University of Technology and Design
iTrust Center for Research in Cyber Security for discovering and 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-ioxxss-wc6CqUws
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-JUN-03 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------------------------------------------------------------
Cisco IOx Application Framework Arbitrary File Overwrite Vulnerability
Priority: Medium
Advisory ID: cisco-sa-caf-file-mVnPqKW9
First Published: 2020 June 3 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvr30027
CVE-2020-3237
CWE-59
CVSS Score:
6.3 AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:L/E:X/RL:X/RC:X
Summary
o
A vulnerability in the Cisco Application Framework component of the Cisco
IOx application environment could allow an authenticated, local attacker to
overwrite arbitrary files in the virtual instance that is running on the
affected device.
The vulnerability is due to insufficient path restriction enforcement. An
attacker could exploit this vulnerability by including a crafted file in an
application package. An exploit could allow the attacker to overwrite
files.
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-caf-file-mVnPqKW9
Affected Products
o Vulnerable Products
At the time of publication, this vulnerability affected the following Cisco
products if they were running a Cisco IOx Application Framework release
earlier than Release 1.9.0:
800 Series Industrial Integrated Services Routers (Industrial ISRs)
800 Series Integrated Services Routers (ISRs)
1000 Series Connected Grid Routers (CGR1000) Compute Module
IC3000 Industrial Compute Gateway
Industrial Ethernet (IE) 4000 Series Switches
IOS XE-based devices:
1000 Series ISRs
4000 Series ISRs
ASR 1000 Series Aggregation Services Routers
Catalyst 9x00 Series Switches
Catalyst IE3400 Rugged Series Switches
Embedded Services 3300 Series Switches
IR510 WPAN Industrial Routers
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.
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 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
At the time of publication, Cisco IOx Application Framework releases 1.9.0
and later contained the fix for this vulnerability.
See the Details section in the bug ID(s) at the top of this advisory for
the most complete and current information.
The following table indicates the first fixed software release that
supports Cisco IOx Application Framework Release 1.9.0 or later.
Cisco Platform Release That Introduced Support for Cisco IOx
Application Framework Release 1.9.0 or Later
800 Series Industrial ISRs Cisco IOS Software Release 15.9(3)M
800 Series ISRs Not fixed; IOx has reached end of life on the
Cisco 800 Series ISRs.
CGR1000 Compute Module IOx image for CGR1000 Release 1.10.0.6
IC3000 Industrial Compute Industrial Compute Gateway Software Release
Gateway 1.2.1
IE 4000 Series Switches Cisco IOS Software Release 15.2.(7a)E0b
IOS XE devices:
o 1000 Series ISRs
o 4000 Series ISRs
o ASR 1000 Series
Aggregation Services
Routers Cisco IOS XE Software Release 17.2(1)
o Catalyst 9x00 Series
Switches
o Catalyst IE3400 Rugged
Series Switches
o Embedded Services 3300
Series Switches
IR510 WPAN Industrial IR510 Operating System Release 6.1.27
Routers
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.
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-caf-file-mVnPqKW9
Revision History
o +----------+---------------------------+----------+--------+--------------+
| Version | Description | Section | Status | Date |
+----------+---------------------------+----------+--------+--------------+
| 1.0 | Initial public release. | - | Final | 2020-JUN-03 |
+----------+---------------------------+----------+--------+--------------+
- --------------------------END INCLUDED TEXT--------------------
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