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High 7.5

FreeSWITCHのRTCP処理に範囲外読み取りの脆弱性、通話が切断されるおそれ

CVE-2026-116784 First seen on SecPulse

Summary

FreeSWITCHでRTCPのNACKパケットを処理する際、範囲外の領域を読み取る脆弱性が見つかりました。細工したRTCPパケットを送られると、FreeSWITCHが停止し、確立中のすべての通話が切断されるおそれがあります。影響を受けるのは1.11.2より前のバージョンで、1.11.2で修正されています。

AI summary

Produced by SecPulse using an external AI model; it may contain mistakes. Check the original description and references below before acting on it.

FreeSWITCHでRTCPのNACKパケットを処理する際、範囲外の領域を読み取る脆弱性が見つかりました。細工したRTCPパケットを送られると、FreeSWITCHが停止し、確立中のすべての通話が切断されるおそれがあります。影響を受けるのは1.11.2より前のバージョンで、1.11.2で修正されています。

Original description The description as published by the source.

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, process_rtcp_report() used an RTPFB NACK packet's declared RTCP header length as its feedback-entry loop bound instead of the datagram length already validated by the caller. A short packet with an oversized declaration could drive reads far beyond the fixed 16 KiB receive buffer. Any peer able to send RTCP to an active video call can reach the flaw, including calls where remote SDP enables video RTCP even though the SIP profile has no explicit RTCP interval configured. The out-of-bounds read can crash FreeSWITCH and terminate every active call, but supplies no write primitive and does not echo the read values to the sender. This issue is fixed in version 1.11.2.

Source: CVE.org (CVE Program・cvelistV5) NVD

References

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