CVE-2023-46853 : Security Advisory and Response
Learn about CVE-2023-46853, an off-by-one error vulnerability in Memcached before 1.6.22 that could allow arbitrary code execution. Find out how to mitigate the risk and update your Memcached installation.
Understanding CVE-2023-46853
In Memcached before 1.6.22, an off-by-one error exists when processing proxy requests in proxy mode, if \n is used instead of \r\n.
What is CVE-2023-46853?
CVE-2023-46853 relates to an off-by-one error in Memcached before version 1.6.22. This vulnerability occurs specifically when processing proxy requests in proxy mode.
The Impact of CVE-2023-46853
This vulnerability could potentially allow an attacker to exploit the off-by-one error to trigger unexpected behavior or even execute arbitrary code.
Technical Details of CVE-2023-46853
Vulnerability Description
The vulnerability arises from using \n instead of \r\n in proxy requests in proxy mode in Memcached before version 1.6.22, leading to an off-by-one error.
Affected Systems and Versions
All versions of Memcached before 1.6.22 are affected by CVE-2023-46853.
Exploitation Mechanism
An attacker can exploit this vulnerability by manipulating proxy requests in proxy mode when \n is utilized instead of \r\n.
Mitigation and Prevention
Immediate Steps to Take
Users are strongly advised to update their Memcached installations to version 1.6.22 or later to mitigate the risks associated with CVE-2023-46853.
Long-Term Security Practices
To enhance security posture, organizations should regularly update their software and implement secure coding practices to prevent similar vulnerabilities.
Patching and Updates
It is crucial to stay informed about security updates and promptly apply patches to address known vulnerabilities like CVE-2023-46853.