librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.

librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.

Affected: Ubuntu:14.04:LTS: rtmpdump, Ubuntu:16.04:LTS: rtmpdump, Ubuntu:18.04:LTS: rtmpdump, Ubuntu:20.04:LTS: rtmpdump, Ubuntu:22.04:LTS: rtmpdump, Ubuntu:24.04:LTS: rtmpdump, Ubuntu:26.10: rtmpdump, Ubuntu:26.04:LTS: rtmpdump

librtmp (RTMPDump) through 2.6 contains a heap out-of-bounds read vulnerability in AMFProp_Decode that reads an AMF0 strict-array element count before checking that four bytes remain. A malicious RTMP server or man in the middle can send an AMF0 body ending with a strict-array type byte and fewer than four trailing bytes to crash the client.