OpenSIPS up to 3.1.6/3.2.3 msg_translator.c build_res_buf_from_sip_req denial of service

Summaryinfo

A vulnerability was found in OpenSIPS up to 3.1.6/3.2.3. It has been classified as problematic. This affects the function build_res_buf_from_sip_req of the file msg_translator.c. This manipulation causes denial of service. This vulnerability is registered as CVE-2023-28095. Remote exploitation of the attack is possible. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as problematic was found in OpenSIPS up to 3.1.6/3.2.3. Affected by this vulnerability is the function build_res_buf_from_sip_req of the file msg_translator.c. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Versions prior to 3.1.7 and 3.2.4 have a potential issue in `msg_translator.c:2628` which might lead to a server crash. This issue was found while fuzzing the function `build_res_buf_from_sip_req` but could not be reproduced against a running instance of OpenSIPS. This issue could not be exploited against a running instance of OpenSIPS since no public function was found to make use of this vulnerable code. Even in the case of exploitation through unknown vectors, it is highly unlikely that this issue would lead to anything other than Denial of Service. This issue has been fixed in versions 3.1.7 and 3.2.4.

The weakness was published 03/16/2023 as GHSA-7pf3-24qg-8v9h. The advisory is shared at github.com. This vulnerability is known as CVE-2023-28095 since 03/10/2023. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1499 for this issue.

Upgrading to version 3.1.7 or 3.2.4 eliminates this vulnerability. Applying the patch 9cf3dd3398719dd91207495f76d7726701c5145c 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.

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Productinfo

Name

• OpenSIPS

Version

• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.1.4
• 3.1.5
• 3.1.6
• 3.2.0
• 3.2.1
• 3.2.2
• 3.2.3

License

• open-source

Website

• Product: https://github.com/OpenSIPS/opensips/

CPE 2.3info

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CPE 2.2info

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