Cisco SD-WAN Command Injection Vulnerabilities

Vulnerability

CVE-2021-1262 is a command injection vulnerability in Cisco SD-WAN products that could allow an authenticated attacker to execute arbitrary commands with root privileges [1]. The vulnerability exists due to improper input validation of user-supplied input. Affected products include Cisco SD-WAN vManage and other SD-WAN software releases prior to the fixed versions [1]. The specific component affected is not explicitly disclosed in available references for this CVE.

Exploitation

An attacker must be authenticated to the affected system, with either network access to the web-based management interface or local access to the CLI [1]. By submitting crafted input to the vulnerable component, the attacker can inject arbitrary commands. The exact mechanism for CVE-2021-1262 is not detailed in the available references, but the advisory indicates that exploitation does not depend on other vulnerabilities [1].

Impact

Successful exploitation allows the attacker to execute arbitrary commands with root-level privileges on the affected device [1]. This results in full compromise of the device's confidentiality, integrity, and availability, potentially leading to complete control of the SD-WAN infrastructure [1].

Mitigation

Cisco has released software updates that address this vulnerability [1]. There are no workarounds available [1]. Users are advised to upgrade to the latest fixed software version as indicated in the Cisco Security Advisory. No KEV listing is noted in the available references.