Memcached up to 1.6.21 Proxy Mode buffer overflow

Summaryinfo

A vulnerability marked as critical has been reported in Memcached up to 1.6.21. Impacted is an unknown function of the component Proxy Mode. Performing a manipulation results in buffer overflow. This vulnerability is known as CVE-2023-46852. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Memcached up to 1.6.21. This affects an unknown code of the component Proxy Mode. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Memcached before 1.6.22, a buffer overflow exists when processing multiget requests in proxy mode, if there are many spaces after the "get" substring.

The weakness was published 10/27/2023 as 76a6c363c18cfe7b6a1524ae64202ac9db330767. The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2023-46852 since 10/27/2023. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 239855 (TencentOS Server 4: memcached (TSSA-2024:0064)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.6.22 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 76a6c363c18cfe7b6a1524ae64202ac9db330767 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (239855) and EUVD (EUVD-2023-51018). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Name

• Memcached

Version

• 1.6.0
• 1.6.1
• 1.6.2
• 1.6.3
• 1.6.4
• 1.6.5
• 1.6.6
• 1.6.7
• 1.6.8
• 1.6.9
• 1.6.10
• 1.6.11
• 1.6.12
• 1.6.13
• 1.6.14
• 1.6.15
• 1.6.16
• 1.6.17
• 1.6.18
• 1.6.19
• 1.6.20
• 1.6.21

License

• open-source

Website

• Product: https://github.com/memcached/memcached/

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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