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CVE-2023-27600
HIGH · CVSS 7.5
EPSS exploitation probability: 0%
Published 2023-03-15T22:15:10.267 · Last modified 2026-06-17T05:45:33.583

Summary

OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, OpenSIPS crashes when a malformed SDP body is received and is processed by the `delete_sdp_line` function in the sipmsgops module. This issue can be reproduced by calling the function with an SDP body that does not terminate by a line feed (i.e. `\n`). The vulnerability was found while performing black-box fuzzing against an OpenSIPS server running a configuration that made use of the functions `codec_delete_except_re` and `codec_delete_re`. The same issue was also discovered while performing coverage guided fuzzing on the function `codec_delete_except_re`. The crash happens because the function `delete_sdp_line` expects that an SDP line is terminated by a line feed (`\n`). By abusin

Affected products

opensips — opensips

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.