OpenSIPS up to 3.1.6/3.2.3 Authorization Header parse_param_name denial of service

Summaryinfo

A vulnerability was found in OpenSIPS up to 3.1.6/3.2.3. It has been declared as problematic. This impacts the function parse_param_name of the component Authorization Header Handler. Such manipulation leads to denial of service. This vulnerability is documented as CVE-2023-28098. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in OpenSIPS up to 3.1.6/3.2.3. Affected by this issue is the function parse_param_name of the component Authorization Header Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, a specially crafted Authorization header causes OpenSIPS to crash or behave in an unexpected way due to a bug in the function `parse_param_name()` . This issue was discovered while performing coverage guided fuzzing of the function parse_msg. The AddressSanitizer identified that the issue occurred in the function `q_memchr()` which is being called by the function `parse_param_name()`. This issue may cause erratic program behaviour or a server crash. It affects configurations containing functions that make use of the affected code, such as the function `www_authorize()` . Versions 3.1.7 and 3.2.4 contain a fix.

The weakness was released 03/16/2023 as GHSA-jrqg-vppj-hr2h. The advisory is available at github.com. This vulnerability is handled as CVE-2023-28098 since 03/10/2023. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

Upgrading to version 3.1.7 or 3.2.4 eliminates this vulnerability. Applying the patch dd9141b6f67d7df4072f3430f628d4b73df5e102 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/

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