CVE-2022-20701
Published on February 10, 2022
Multiple vulnerabilities in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code Elevate privileges Execute arbitrary commands Bypass authentication and authorization protections Fetch and run unsigned software Cause denial of service (DoS) For more information about these vulnerabilities, see the Details section of this advisory.
Known Exploited Vulnerability
This Cisco Small Business RV Series Routers Stack-based Buffer Overflow Vulnerability is part of CISA's list of Known Exploited Vulnerabilities. A vulnerability in Cisco Small Business RV160, RV260, RV340, and RV345 Series Routers could allow an attacker to do any of the following: Execute arbitrary code elevate privileges, execute arbitrary commands, bypass authentication and authorization protections, fetch and run unsigned software, or cause a denial of service (DoS).
The following remediation steps are recommended / required by March 17, 2022: Apply updates per vendor instructions.
Vulnerability Analysis
CVE-2022-20701 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. It has an exploitability score of 1.8 out of four. The potential impact of an exploit of this vulnerability is considered to be very high.
What is a Memory Corruption Vulnerability?
The software writes data past the end, or before the beginning, of the intended buffer. Typically, this can result in corruption of data, a crash, or code execution. The software may modify an index or perform pointer arithmetic that references a memory location that is outside of the boundaries of the buffer. A subsequent write operation then produces undefined or unexpected results.
CVE-2022-20701 has been classified to as a Memory Corruption vulnerability or weakness.
Products Associated with CVE-2022-20701
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What versions are vulnerable to CVE-2022-20701?
Each of the following must match for the vulnerability to exist.
Each of the following must match for the vulnerability to exist.
Each of the following must match for the vulnerability to exist.
Each of the following must match for the vulnerability to exist.