Advisory Details

February 4th, 2021

Cisco Multiple Routers RESTCONF Content-Type Header Command Injection Remote Code Execution Vulnerability

CVE ID	CVE-2021-1291
CVSS SCORE	8.8, AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
AFFECTED VENDORS	Cisco
AFFECTED PRODUCTS	Multiple Routers
VULNERABILITY DETAILS	This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of Cisco RV16x and RV26x routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the web service, which listens on TCP port 443 by default. When parsing the Content-Type request header, the process does not properly validate a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root.
ADDITIONAL DETAILS	Cisco has issued an update to correct this vulnerability. More details can be found at: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-rv160-260-rce-XZeFkNHf
DISCLOSURE TIMELINE	2020-10-21 - Vulnerability reported to vendor 2021-02-04 - Coordinated public release of advisory
CREDIT	T Shiomitsu

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