CVE-2025-53399

Description

In Sipwise rtpengine before 13.4.1.1, an origin-validation error in the endpoint-learning logic of the media-relay core allows remote attackers to inject or intercept RTP/SRTP media streams via RTP packets (except when the relay is configured for strict source and learning disabled). Version 13.4.1.1 fixes the heuristic mode by limiting exposure to the first five packets, and introduces a recrypt flag that fully prevents SRTP attacks when both mitigations are enabled.

Weakness Type (CWE)

CWE-346 CWE-346

References

Other References

https://github.com/EnableSecurity/advisories/tree/master/ES2025-01-rtpengine-improper-behavior-bleed-inject https://github.com/sipwise/rtpengine/commits/rfuchs/security/ https://github.com/sipwise/rtpengine/releases/tag/mr13.4.1.1 https://www.openwall.com/lists/oss-security/2025/07/31/1 http://seclists.org/fulldisclosure/2025/Aug/1 http://www.openwall.com/lists/oss-security/2025/07/31/1

Frequently Asked Questions

What is CVE-2025-53399? +

In Sipwise rtpengine before 13.4.1.1, an origin-validation error in the endpoint-learning logic of the media-relay core allows remote attackers to inject or intercept RTP/SRTP media streams via RTP packets (except when the relay is configured for strict source and learning disabled). Version 13.4.1.1 fixes the heuristic mode by limiting exposure to the first five packets, and introduces a recrypt flag that fully prevents SRTP attacks when both mitigations are enabled.

How do I check if I'm vulnerable to CVE-2025-53399? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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