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CVE-2024-20320

HIGHCVSS 7.8/10EPSS 0.19%

Last modified

CVE-2024-20320 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. A vulnerability in the SSH client feature of Cisco IOS XR Software for Cisco 8000 Series Routers and Cisco Network Convergence System (NCS) 540 Series and 5700 Series Routers could allow an authenticated, local attacker to elevate privileges on an affected device. This vulnerability is due to insufficient validation of arguments that are included with the SSH client CLI command. EPSS estimates a 0.19% chance of exploitation in the next 30 days.

Description

A vulnerability in the SSH client feature of Cisco IOS XR Software for Cisco 8000 Series Routers and Cisco Network Convergence System (NCS) 540 Series and 5700 Series Routers could allow an authenticated, local attacker to elevate privileges on an affected device. This vulnerability is due to insufficient validation of arguments that are included with the SSH client CLI command. An attacker with low-privileged access to an affected device could exploit this vulnerability by issuing a crafted SSH client command to the CLI. A successful exploit could allow the attacker to elevate privileges to root on the affected device.

Metrics

CVSS 3.1
7.8/10

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

EPSS Probability
0.19%

9.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
CiscoIos Xr7.2.1
CiscoIos Xr7.2.2
CiscoIos Xr7.3.1
CiscoIos Xr7.3.2
CiscoIos Xr7.3.3
CiscoIos Xr7.3.5
CiscoIos Xr7.3.15
CiscoIos Xr7.4.1
CiscoIos Xr7.4.2
CiscoIos Xr7.5.1
CiscoIos Xr7.5.2
CiscoIos Xr7.5.3
CiscoIos Xr7.5.4
CiscoIos Xr7.5.5
CiscoIos Xr7.6.1
CiscoIos Xr7.6.2
CiscoIos Xr7.7.1
CiscoIos Xr7.7.2
CiscoIos Xr7.7.21
CiscoIos Xr7.8.1
CiscoIos Xr7.8.2
CiscoIos Xr7.9.1
CiscoIos Xr7.9.2
CiscoIos Xr7.9.21
CiscoIos Xr7.10.1

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2024-20320?
A vulnerability in the SSH client feature of Cisco IOS XR Software for Cisco 8000 Series Routers and Cisco Network Convergence System (NCS) 540 Series and 5700 Series Routers could allow an authenticated, local attacker to elevate privileges on an affected device. This vulnerability is due to insufficient validation of arguments that are included with the SSH client CLI command. An attacker with low-privileged access to an affected device could exploit this vulnerability by issuing a crafted SSH client command to the CLI. A successful exploit could allow the attacker to elevate privileges to root on the affected device.
How severe is CVE-2024-20320?
CVE-2024-20320 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.19% probability of exploitation in the next 30 days.
How do I fix CVE-2024-20320?
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-2024-20320?

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

Scan your code now

Source: NVD / NIST