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AUSCERT External Security Bulletin Redistribution
ESB-2022.1617.2
Cisco IOx Application Hosting Environment Vulnerabilities
13 May 2022
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco IOx Application Hosting Environment
Publisher: Cisco Systems
Operating System: Cisco
Resolution: Patch/Upgrade
CVE Names: CVE-2022-20727 CVE-2022-20726 CVE-2022-20725
CVE-2022-20724 CVE-2022-20723 CVE-2022-20722
CVE-2022-20721 CVE-2022-20720 CVE-2022-20719
CVE-2022-20718 CVE-2022-20677
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-yuXQ6hFj
Comment: CVSS (Max): 5.5 CVE-2022-20719 (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N)
CVSS Source: Cisco Systems
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
Revision History: May 13 2022: Removed individual product IDs from Fixed Software for Cisco IOS XE devices. Updated fixed release information for IR510 WPAN Industrial Router.
April 14 2022: Initial Release
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Cisco IOx Application Hosting Environment Vulnerabilities
Priority: Medium
Advisory ID: cisco-sa-iox-yuXQ6hFj
First Published: 2022 April 13 16:00 GMT
Last Updated: 2022 May 12 15:50 GMT
Version 1.1: Final
Workarounds: No workarounds available
Cisco Bug IDs: CSCvx27640 CSCvy16608 CSCvy30903 CSCvy30957 CSCvy35913
CSCvy35914 CSCvy86583 CSCvy86598 CSCvy86602 CSCvy86603
CSCvy86604 CSCvy86608
CVE Names: CVE-2022-20677 CVE-2022-20718 CVE-2022-20719 CVE-2022-20720
CVE-2022-20721 CVE-2022-20722 CVE-2022-20723 CVE-2022-20724
CVE-2022-20725 CVE-2022-20726 CVE-2022-20727
CWEs: CWE-22 CWE-250 CWE-77
Summary
o Multiple vulnerabilities in the Cisco IOx application hosting environment
on multiple Cisco platforms could allow an attacker to inject arbitrary
commands into the underlying host operating system, execute arbitrary code
on the underlying host operating system, install applications without being
authenticated, or conduct a cross-site scripting (XSS) attack against a
user of the affected software.
For more information about these vulnerabilities, see the Details section
of this advisory.
Cisco has released software updates that address these vulnerabilities.
There are no workarounds that address these vulnerabilities.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-yuXQ6hFj
This advisory is part of the April 2022 release of the Cisco IOS and IOS XE
Software Security Advisory Bundled Publication. For a complete list of the
advisories and links to them, see Cisco Event Response: April 2022
Semiannual Cisco IOS and IOS XE Software Security Advisory Bundled
Publication.
Affected Products
o Vulnerable Products
At the time of publication, one of more of these vulnerabilities affected
the following Cisco products if they were running a vulnerable software
release:
800 Series Industrial Integrated Services Routers (Industrial ISRs)
800 Series Integrated Services Routers (ISRs)
1000 Series Connected Grid Router (CGR1000) Compute Modules
IC3000 Industrial Compute Gateways
Industrial Ethernet (IE) 4000 Series Switches
IOS XE-based devices configured with IOx
IR510 WPAN Industrial Routers
For information about which Cisco software releases were vulnerable at the
time of publication, see the Fixed Software section of this advisory. 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 these vulnerabilities.
Cisco has confirmed that these vulnerabilities do not affect the following
Cisco products:
IOS XR Software
Meraki products
NX-OS Software
Details
o The vulnerabilities are not dependent on one another. Exploitation of one
of the vulnerabilities is not required to exploit another vulnerability. In
addition, a software release that is affected by one of the vulnerabilities
may not be affected by the other vulnerabilities.
Details about the vulnerabilities are as follows:
CVE-2022-20718: Cisco IOx Application Hosting Environment Parameter
Injection Vulnerability
A vulnerability in the Cisco IOx application hosting environment of
multiple Cisco platforms could allow an authenticated, remote attacker to
execute a parameter injection using the Cisco IOx API.
This vulnerability is due to incomplete sanitization of parameters that are
passed in for activation of an application. An attacker could exploit this
vulnerability by deploying and activating an application in the Cisco IOx
application hosting environment with a crafted activation payload file. A
successful exploit could allow the attacker to execute arbitrary code as
root on the underlying host operating system.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvy35913
CVE ID: CVE-2022-20718
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
CVE-2022-20719: Cisco IOx Application Hosting Environment Parameter
Injection Vulnerability
A vulnerability in the Cisco IOx application hosting environment of
multiple Cisco platforms could allow an authenticated, remote attacker to
execute a parameter injection using the Cisco IOx API.
This vulnerability is due to incomplete sanitization of parameters that are
passed in as part of the IOx package descriptor. An attacker could exploit
this vulnerability by crafting an IOx package descriptor file and then
building and deploying an application in the Cisco IOx application hosting
environment. A successful exploit could allow the attacker to execute
arbitrary code as root on the underlying host operating system.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvy86583
CVE ID: CVE-2022-20719
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
CVE-2022-20720: Cisco IOx Application Hosting Environment Path Traversal
Vulnerability
A vulnerability in the Cisco IOx application hosting environment of
multiple Cisco platforms could allow an authenticated, remote attacker to
read or write arbitrary data on the underlying host operating system.
This vulnerability exists because a real path check is not performed on the
requested data. An attacker could exploit this vulnerability by creating a
symbolic link within the deployed application and requesting data using the
API. A successful exploit could allow the attacker to read or execute
arbitrary code as root on the underlying host operating system.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvy30957
CVE ID: CVE-2022-20720
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
CVE-2022-20723: Cisco IOx Application Hosting Environment Arbitrary Code
Execution Vulnerability
A vulnerability in the Cisco IOx application hosting environment of
multiple Cisco platforms could allow an authenticated, remote attacker to
execute arbitrary code on the underlying host operating system.
This vulnerability is due to incomplete sanitization of parameters that are
passed in for activation of an application. An attacker could exploit this
vulnerability by deploying and activating an application in the Cisco IOx
application hosting environment with a crafted activation payload file. A
successful exploit could allow the attacker to execute arbitrary code as
root on the underlying host operating system.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvy86603
CVE ID: CVE-2022-20723
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
CVE-2022-20725: Cisco IOx Application Hosting Environment Cross-Site
Scripting Vulnerability
A vulnerability in the web-based Local Manager interface of the Cisco IOx
application hosting environment 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.
This vulnerability is due to insufficient validation of user-supplied input
by the web-based Local Manager interface. 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.
Bug ID(s): CSCvy86608
CVE ID: CVE-2022-20725
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.5
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:L/A:N
CVE-2022-20724: Cisco IOx Application Hosting Environment User
Impersonation Vulnerability
A vulnerability in the Cisco IOx application hosting environment of
multiple Cisco platforms could allow an unauthenticated, remote attacker to
bypass authentication and impersonate another authenticated user session.
This vulnerability is due to a race condition for allocation of the token.
An attacker could exploit this vulnerability by constantly trying a call to
the upload API, and if the calls occur at the same time as an authorized
administrator deploying an application, the attacker may race the token and
be given the ability to bypass authentication. A successful exploit could
allow the attacker to bypass authentication.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvy86604
CVE ID: CVE-2022-20724
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.3
CVSS Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:H/A:N
CVE-2022-20726: Cisco IOx Application Hosting Environment Denial of Service
Vulnerability
A vulnerability in the Cisco IOx application hosting environment of Cisco
809 Industrial Integrated Services Routers (Industrial ISRs), Cisco 829
Industrial ISRs, Cisco CGR 1000 Compute Modules, and Cisco IC3000
Industrial Compute Gateways could allow an unauthenticated, remote attacker
to cause a denial of service (DoS) condition on an affected device.
This vulnerability is due to insufficient error handling of socket
operations. An attacker could exploit this vulnerability by sending a
sustained rate of crated TCP traffic to the IOx web server on an affected
device. A successful exploit could allow the attacker to cause the IOx web
server to stop processing requests, resulting in a DoS condition.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvx27640
CVE ID: CVE-2022-20726
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.3
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVE-2022-20677: Cisco IOS XE Software Privilege Escalation Vulnerability
A vulnerability in the Cisco IOx application hosting environment in Cisco
IOS XE Software could allow an authenticated, local attacker to elevate
privileges from privilege level 15 to root on an affected device.
This vulnerability is due to incomplete file protection for the Cisco IOx
application hosting environment. An attacker could exploit this
vulnerability by modifying the file system with a crafted payload. A
successful exploit could allow the attacker to execute arbitrary commands
as root .
Bug ID(s): CSCvy30903 CSCvy16608
CVE ID: CVE-2022-20677
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.1
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
CVE-2022-20727: Cisco IOx Application Hosting Environment Privilege
Escalation
A vulnerability in the Cisco IOx application hosting environment of
multiple Cisco platforms could allow an authenticated, local attacker to
gain escalated privileges.
This vulnerability is due to improper input validation when loading Cisco
IOx applications. An attacker could exploit this vulnerability by modifying
application content while a Cisco IOx application is loading. A successful
exploit could allow the attacker to gain privileges equivalent to the root
user.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvy35914
CVE ID: CVE-2022-20727
Security Impact Rating (SIR): Medium
CVSS Base Score: 5.1
CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
CVE-2022-20721: Cisco IOx Application Hosting Environment Arbitrary File
Read Vulnerability
A vulnerability in the Cisco IOx application hosting environment of
multiple Cisco platforms could allow an authenticated, remote attacker to
read arbitrary files from the underlying operating system.
This vulnerability is due to insufficient path validation of command
arguments within the Cisco IOx API. An attacker could exploit this
vulnerability by sending a crafted command request using the API. A
successful exploit could allow the attacker to read the contents of any
file that is located on the host device filesystem.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvy86598
CVE ID: CVE-2022-20721
Security Impact Rating (SIR): Medium
CVSS Base Score: 4.9
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
CVE-2022-20722: Cisco IOx Application Hosting Environment Path Traversal
Vulnerability
A vulnerability in the Cisco IOx application hosting environment of
multiple Cisco platforms could allow an authenticated, remote attacker to
read arbitrary files from the underlying host filesystem.
This vulnerability is due to insufficient path validation of command
arguments within the Cisco IOx API. An attacker could exploit this
vulnerability by sending a crafted command request using the API. A
successful exploit could allow the attacker to read the contents of any
file that is located on the underlying host filesystem.
Cisco has released software updates that address this vulnerability. There
are no workarounds that address this vulnerability.
Bug ID(s): CSCvy86602
CVE ID: CVE-2022-20722
Security Impact Rating (SIR): Medium
CVSS Base Score: 4.9
CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Workarounds
o There are no workarounds that address these vulnerabilities. However, there
is a mitigation.
Customers who do not want to use the Cisco IOx application hosting
environment can disable IOx permanently on the device by using the no iox
configuration command.
While this mitigation has been deployed and was proven successful in a test
environment, customers should determine the applicability and effectiveness
in their own environment and under their own use conditions. Customers
should be aware that any workaround or mitigation that is implemented may
negatively impact the functionality or performance of their network based
on intrinsic customer deployment scenarios and limitations. Customers
should not deploy any workarounds or mitigations before first evaluating
the applicability to their own environment and any impact to such
environment.
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, the release information in the following table
(s) was accurate. See the Details section in the bug ID(s) at the top of
this advisory for the most complete and current information.
Cisco Platform First Fixed Release
800 Series Industrial Cisco IOS Software Release 15.9(3)M5 and later.
ISRs
800 Series ISRs Not fixed; IOx has reached end of life on Cisco
800 Series ISRs.
CGR1000 Compute Modules IOx image for CGR1000 Compute Module 1.15.0.1
IC3000 Industrial Industrial Compute Gateway Software Release 1.4.1
Compute Gateways
IE 4000 Series Switches Not fixed; IOx has reached end of life on the
Cisco IE 4000 Series Switches.
Cisco IOS XE Software releases:
o 16.12(7) (All but CSCvy16608 are resolved in
16.12(6))
IOS XE-based devices o 17.3(5)
configured with IOx o 17.6(2)
o 17.7(1) and later
For more information, see the Cisco IOS and IOS XE
Software Checker section below.
IR510 WPAN Industrial IR510 Operating System 6.5.9
Routers
The Cisco Product Security Incident Response Team (PSIRT) validates only
the affected and fixed release information that is documented in this
advisory.
Cisco IOS and IOS XE Software
To help customers determine their exposure to vulnerabilities in Cisco IOS
and IOS XE Software, Cisco provides the Cisco Software Checker to identify
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 the Cisco Software Checker to search advisories in the
following ways:
Choose the software and one or more releases
Upload a .txt file that includes a list of specific releases
Enter the output of the show version command
After initiating a search, customers can customize the search to include
all Cisco Security Advisories, a specific advisory, or all advisories in
the most recent bundled publication.
Customers can also use the following form to determine whether a release is
affected by any Cisco Security Advisory by entering a Cisco IOS or IOS XE
Software release-for example, 15.1(4)M2 or 3.13.8S :
[ ] [Check]
By default, the Cisco Software Checker includes results only for
vulnerabilities that have a Critical or High Security Impact Rating (SIR).
To include results for Medium SIR vulnerabilities, customers can use the
Cisco Software Checker on Cisco.com and check the Medium check box in the
drop-down list under Impact Rating when customizing a search.
Exploitation and Public Announcements
o The Cisco PSIRT is not aware of any public announcements or malicious use
of the vulnerabilities that are described in this advisory.
Source
o Cisco would like to thank Cyrille CHATRAS of Orange group for reporting the
following vulnerabilities: CVE-2022-20718, CVE-2022-20719, CVE-2022-20720,
CVE-2022-20721, CVE-2022-20722, CVE-2022-20723, CVE-2022-20724,
CVE-2022-20725.
CVE-2022-20718 and CVE-2022-20720: These vulnerabilities were also found
during internal security testing by X.B. of the Cisco Advanced Security
Initiatives Group (ASIG).
CVE-2022-20677: This vulnerability was found during internal security
testing by X.B. of the Cisco ASIG.
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 Cisco Event Response: April 2022 Semiannual Cisco IOS and IOS XE Software
Security Advisory Bundled Publication
Cross-Site Scripting
URL
o https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iox-yuXQ6hFj
Revision History
o +---------+-----------------------------+----------+--------+-------------+
| Version | Description | Section | Status | Date |
+---------+-----------------------------+----------+--------+-------------+
| | Removed individual product | | | |
| | IDs from Fixed Software for | | | |
| 1.1 | Cisco IOS XE devices. | Fixed | Final | 2022-MAY-12 |
| | Updated fixed release | Software | | |
| | information for IR510 WPAN | | | |
| | Industrial Router. | | | |
+---------+-----------------------------+----------+--------+-------------+
| 1.0 | Initial public release. | - | Final | 2022-APR-13 |
+---------+-----------------------------+----------+--------+-------------+
- --------------------------END INCLUDED TEXT--------------------
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