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URL:
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cmd-injection-xD9OhyOP
Submission: On July 02 via api (July 2nd 2024, 1:39:09 pm UTC) from US — Scanned from DE

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Text Content

Home / Cisco Security / Security Advisories

CISCO SECURITY ADVISORY

CISCO NX-OS SOFTWARE CLI COMMAND INJECTION VULNERABILITY

Medium
Advisory ID:
cisco-sa-nxos-cmd-injection-xD9OhyOP
First Published:
2024 July 1 16:00 GMT
Version 1.0:
Final
Workarounds:
No workarounds available
Cisco Bug IDs:
CSCwj94682
CSCwj97007
CSCwj97009
More...

,CSCwj94682,CSCwj97007,CSCwj97009,CSCwj97011
CVE-2024-20399

CWE-78

CVSS Score:
Base 6.0Click Icon to Copy Verbose Score
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N/E:X/RL:X/RC:X
CVE-2024-20399

CWE-78

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SUMMARY

* A vulnerability in the CLI of Cisco NX-OS Software could allow an
authenticated, local attacker to execute arbitrary commands as root on the
underlying operating system of an affected device.

This vulnerability is due to insufficient validation of arguments that are
passed to specific configuration CLI commands. An attacker could exploit this
vulnerability by including crafted input as the argument of an affected
configuration CLI command. A successful exploit could allow the attacker to
execute arbitrary commands on the underlying operating system with the
privileges of root.

Note: To successfully exploit this vulnerability on a Cisco NX-OS device, an
attacker must have 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://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cmd-injection-xD9OhyOP

AFFECTED PRODUCTS

* VULNERABLE PRODUCTS

At the time of publication, this vulnerability affected the following Cisco
products if they were running a vulnerable release of Cisco NX-OS Software:

* MDS 9000 Series Multilayer Switches (CSCwj97007)
* Nexus 3000 Series Switches (CSCwj97009)1
* Nexus 5500 Platform Switches (CSCwj97011)
* Nexus 5600 Platform Switches (CSCwj97011)
* Nexus 6000 Series Switches (CSCwj97011)
* Nexus 7000 Series Switches (CSCwj94682)2
* Nexus 9000 Series Switches in standalone NX-OS mode (CSCwj97009)1

1. For Cisco NX-OS Software releases that are running on Cisco Nexus 3000
Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS
mode, the software does not grant additional privileges due to the
availability of the bash-shell feature. Cisco NX-OS Software releases 9.3(5)
and later are not affected by this vulnerability, with the exception of the
following Cisco platforms:

* Nexus 3000 platforms:
* N3K-C3264C-E
* N3K-C3172PQ-10GE
* N3K-C3172PQ-10GE-XL
* N3K-C3172TQ-10GT
* N3K-C3548P-10GX

* Nexus 9000 platforms:
* N9K-C92348GC-X (fixed in Cisco NX-OS Software releases 10.4.3 and
later)

2. For Cisco NX-OS Software releases 8.1(0) and later that are running on
Cisco Nexus 7000 Series Switches, the software does not grant additional
privileges due to the availability of the bash-shell feature.

For more information on this vulnerability, see the Details section of this
advisory.

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.

Cisco has confirmed that this vulnerability does not affect the following
Cisco products:

* Adaptive Security Appliance (ASA) Software
* Firepower 1000 Series
* Firepower 2100 Series
* Firepower 4100 Series
* Firepower 9300 Security Appliances
* Firepower Threat Defense (FTD) Software
* Secure Firewall 3100 Series
* Secure Firewall 4200 Series
* Secure Firewall Management Center (FMC) Software
* UCS 6200 Series Fabric Interconnects
* UCS 6300 Series Fabric Interconnects
* UCS 6400 Series Fabric Interconnects
* UCS 6500 Series Fabric Interconnects

DETAILS

* The bash-shell feature is available on all supported Cisco NX-OS Software
releases for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series
Switches in standalone NX-OS mode and on Cisco NX-OS Software releases 8.1
and later for Cisco Nexus 7000 Series Switches.

To exploit this vulnerability, an attacker has to have Administrator
privileges and have access to specific configuration commands.

If a device is running a Cisco NX-OS Software release that does not support
the bash-shell feature, a user with Administrator privileges could exploit
this vulnerability to execute arbitrary commands on the underlying operating
system.

If a device is running a Cisco NX-OS Software release that supports the
bash-shell feature, a user with Administrator privileges can access the
underlying operation system directly using the bash-shell feature. However,
this vulnerability allows a user with Administrator privileges to execute
commands on the underlying operating system without enabling the bash-shell
feature and without triggering system syslog messages showing that the user
executed the run bash command. This could help a user with Administrator
privileges hide the execution of shell commands on the device.

As a standard network practice, the credentials for the administrative users
network-admin and vdc-admin should be monitored and changed frequently.

WORKAROUNDS

* There are no workarounds that address this vulnerability.

FIXED SOFTWARE

* 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.

CISCO NX-OS SOFTWARE

To help customers determine their exposure to vulnerabilities in Cisco NX-OS
Software, Cisco provides the Cisco Software Checker. This tool identifies any
Cisco security advisories that impact a specific software release and the
earliest release that fixes the vulnerabilities that are 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
that the Software Checker identifies (“Combined First Fixed”).

To use the tool, go to the Cisco Software Checker page and follow the
instructions. Alternatively, use the following form to search for
vulnerabilities that affect a specific software release. To use the form,
follow these steps:

1. Choose which advisories the tool will search-only this advisory, only
advisories with a Critical or High Security Impact Rating (SIR), or all
advisories.
2. Choose the appropriate software.
3. Choose the appropriate platform.
4. Enter a release number-for example, 7.0(3)I7(5) for Cisco Nexus 3000
Series Switches or 14.0(1h) for Cisco NX-OS Software in ACI mode.
5. Click Check.

Only this advisory All Critical and High advisories All advisories Cisco
NX-OS Software Cisco NX-OS Software in ACI Mode Any Platform MDS 9000 Series
Multilayer Switches Nexus 1000V Series Switches Nexus 3000 Series Switches
Nexus 5000 Series Switches Nexus 6000 Series Switches Nexus 7000 Series
Switches Nexus 9000 Series Switches

ADDITIONAL RESOURCES

For help determining the best Cisco NX-OS Software release for a Cisco Nexus
Switch, see the following Recommended Releases documents. If a security
advisory recommends a later release, Cisco recommends following the advisory
guidance.

> Cisco MDS Series Switches
> Cisco Nexus 1000V for VMware Switch
> Cisco Nexus 3000 Series Switches
> Cisco Nexus 5500 Platform Switches
> Cisco Nexus 5600 Platform Switches
> Cisco Nexus 6000 Series Switches
> Cisco Nexus 7000 Series Switches
> Cisco Nexus 9000 Series Switches
> Cisco Nexus 9000 Series ACI-Mode Switches

To determine the best release for Cisco UCS Software, see the Recommended
Releases documents in the release notes for the device.

EXPLOITATION AND PUBLIC ANNOUNCEMENTS

* In April 2024, the Cisco Product Security Incident Response Team (PSIRT)
became aware of attempted exploitation of this vulnerability in the wild.

SOURCE

* Cisco would like to thank Sygnia for reporting this vulnerability. Tristan
Van Egroo of the Cisco Advanced Security Initiatives Group (ASIG)
investigated this vulnerability.

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

RELATED TO THIS ADVISORY

URL

* https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-nxos-cmd-injection-xD9OhyOP

REVISION HISTORY

* Version Description Section Status Date 1.0 Initial public release. - Final
2024-JUL-01

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.

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sec.cloudapps.cisco.com Open in urlscan Pro 72.163.15.141 Public Scan

Form analysis 2 forms found in the DOM

Name: pdfGeneration — POST /security/center/downloadPDF.pdf

GET https://sec.cloudapps.cisco.com/security/center/softwarechecker.x?#~onStep3

Text Content

sec.cloudapps.cisco.com Open in urlscan Pro
72.163.15.141 Public Scan

Form analysis
2 forms found in the DOM