#VU97200 OS Command Injection in Cisco IOS XR - CVE-2024-20398

Vulnerability identifier: #VU97200

Vulnerability risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-20398

CWE-ID: CWE-78

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Cisco IOS XR
Operating systems & Components / Operating system

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a local user to escalate privileges on the device.

The vulnerability exists due to improper validation of user arguments that are passed to specific CLI commands. A local user can use a specially crafted command to escalate privileges on the device.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Cisco IOS XR: 7.0 - 7.0.90, 7.1 - 7.11.2, 7.2.0 - 7.2.12, 7.3 - 7.3.15, 7.4 - 7.4.2, 7.5.0 - 7.5.4, 7.6.0 - 7.6.3, 7.7.0 - 7.7.21, 7.8 - 7.8.2, 7.9 - 7.9.21, 24.1 - 24.1.1

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External links
https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-iosxr-priv-esc-CrG5vhCq
https://bst.cloudapps.cisco.com/bugsearch/bug/CSCwj25248

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.