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Advisories

GNU Gatekeeper before 5.16 Out-of-Bounds Read via RTCP SDES Parsing

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Severity
medium
Date
Affecting

  • gnugk >= 0, < 5.16

CWE
  • CWE-125 Out-of-bounds Read
CVSS
6.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
Credit
Tristan Madani (Talence Security), Jan Willamowius
Description
GNU Gatekeeper (gnugk) before 5.16 contains an out-of-bounds read vulnerability in ParseRTCP() in ProxyChannel.cxx that allows remote RTP peers to read heap memory past received packets. Attackers can send RTCP SDES items lacking a NUL byte to the media proxy port during proxied H.323 calls with EnableRTCPStats enabled, crashing the gatekeeper.

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