Strix
26.1K

CVE-2024-20492

MEDIUMCVSS 6.7/10EPSS 0.55%

Last modified

CVE-2024-20492 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. A vulnerability in the restricted shell of Cisco Expressway Series could allow an authenticated, local attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have Administrator-level credentials with read-write privileges on an affected device. This vulnerability is due to insufficient validation of user-supplied input. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

A vulnerability in the restricted shell of Cisco Expressway Series could allow an authenticated, local attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have Administrator-level credentials with read-write privileges on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a series of crafted CLI commands. A successful exploit could allow the attacker to escape the restricted shell and gain root privileges on the underlying operating system of the affected device. Note: Cisco Expressway Series refers to Cisco Expressway Control (Expressway-C) devices and Cisco Expressway Edge (Expressway-E) devices.

Metrics

CVSS 3.1
6.7/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
0.55%

41.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoTelepresence Video Communication Serverx8.1
CiscoTelepresence Video Communication Serverx8.1.1
CiscoTelepresence Video Communication Serverx8.1.2
CiscoTelepresence Video Communication Serverx8.2
CiscoTelepresence Video Communication Serverx8.2.1
CiscoTelepresence Video Communication Serverx8.2.2
CiscoTelepresence Video Communication Serverx8.5
CiscoTelepresence Video Communication Serverx8.5.1
CiscoTelepresence Video Communication Serverx8.5.2
CiscoTelepresence Video Communication Serverx8.5.3
CiscoTelepresence Video Communication Serverx8.6
CiscoTelepresence Video Communication Serverx8.6.1
CiscoTelepresence Video Communication Serverx8.7
CiscoTelepresence Video Communication Serverx8.7.1
CiscoTelepresence Video Communication Serverx8.7.2
CiscoTelepresence Video Communication Serverx8.7.3
CiscoTelepresence Video Communication Serverx8.8
CiscoTelepresence Video Communication Serverx8.8.1
CiscoTelepresence Video Communication Serverx8.8.2
CiscoTelepresence Video Communication Serverx8.8.3
CiscoTelepresence Video Communication Serverx8.9
CiscoTelepresence Video Communication Serverx8.9.1
CiscoTelepresence Video Communication Serverx8.9.2
CiscoTelepresence Video Communication Serverx8.10.0
CiscoTelepresence Video Communication Serverx8.10.1
CiscoTelepresence Video Communication Serverx8.10.2
CiscoTelepresence Video Communication Serverx8.10.3
CiscoTelepresence Video Communication Serverx8.10.4
CiscoTelepresence Video Communication Serverx8.11.0
CiscoTelepresence Video Communication Serverx8.11.1
CiscoTelepresence Video Communication Serverx8.11.2
CiscoTelepresence Video Communication Serverx8.11.3
CiscoTelepresence Video Communication Serverx8.11.4
CiscoTelepresence Video Communication Serverx12.5.0
CiscoTelepresence Video Communication Serverx12.5.1
CiscoTelepresence Video Communication Serverx12.5.2
CiscoTelepresence Video Communication Serverx12.5.3
CiscoTelepresence Video Communication Serverx12.5.4
CiscoTelepresence Video Communication Serverx12.5.5
CiscoTelepresence Video Communication Serverx12.5.6
CiscoTelepresence Video Communication Serverx12.5.7
CiscoTelepresence Video Communication Serverx12.5.8
CiscoTelepresence Video Communication Serverx12.5.9
CiscoTelepresence Video Communication Serverx12.6.0
CiscoTelepresence Video Communication Serverx12.6.1
CiscoTelepresence Video Communication Serverx12.6.2
CiscoTelepresence Video Communication Serverx12.6.3
CiscoTelepresence Video Communication Serverx12.6.4
CiscoTelepresence Video Communication Serverx12.7.0
CiscoTelepresence Video Communication Serverx12.7.1

Showing 50 of 79 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2024-20492?
A vulnerability in the restricted shell of Cisco Expressway Series could allow an authenticated, local attacker to perform command injection attacks on the underlying operating system and elevate privileges to root. To exploit this vulnerability, the attacker must have Administrator-level credentials with read-write privileges on an affected device. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by submitting a series of crafted CLI commands. A successful exploit could allow the attacker to escape the restricted shell and gain root privileges on the underlying operating system of the affected device. Note: Cisco Expressway Series refers to Cisco Expressway Control (Expressway-C) devices and Cisco Expressway Edge (Expressway-E) devices.
How severe is CVE-2024-20492?
CVE-2024-20492 has a CVSS score of 6.7/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.
How do I fix CVE-2024-20492?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2024-20492?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST