UNIX symbolic link following in Cisco IOS XE SD-WAN - CVE-2021-1612

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Main Vulnerability Database Vulnerabilities #VU56868

UNIX symbolic link following in Cisco IOS XE SD-WAN - CVE-2021-1612

Published: September 24, 2021


Vulnerability identifier: #VU56868
CSH Severity: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-1612
CWE-ID: CWE-61
Exploitation vector: Local access
Exploit availability: No public exploit available
Vulnerable software:
Cisco IOS XE SD-WAN
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a local user to overwrite arbitrary files.

The vulnerability exists due to improper access controls on files within the local file system. A local user can place a symbolic link in a specific location and overwrite arbitrary files on an affected device.


Remediation

Install updates from vendor's website.

External links