OS Command Injection in Cisco Systems, Inc products - CVE-2021-1529

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Main Vulnerability Database Vulnerabilities #VU57590

OS Command Injection in Cisco Systems, Inc products - CVE-2021-1529

Published: October 21, 2021


Vulnerability identifier: #VU57590
CSH Severity: Low
CVSS v4: 8.5 [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]
CVE-ID: CVE-2021-1529
CWE-ID: CWE-78
Exploitation vector: Local access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the CLI. A local user can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


Affected software

Cisco 1000 Series Integrated Services Routers
4000 Series Integrated Services Routers
Cisco ASR 1000 Series Aggregation Services Routers
Catalyst 8000V Edge Software
Cloud Services Router 1000V Series
Cisco IOS XE SD-WAN

How to mitigate CVE-2021-1529

Install updates from vendor's website.

Cisco IOS XE SD-WAN - addressed in versions 17.2.3, 17.3.4, 17.4.2, 17.5.1a, 17.6.1

External References

Related Security Bulletins