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Advisories

Netrek-client-cow through 3.3.3 Out-of-Bounds Read via SP_S_MESSAGE Packets

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Severity
high
Date
Affecting

  • netrek-client-cow <= 3.3.3

CWE
  • CWE-129 Improper Validation of Array Index
CVSS
7.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Credit
Deus Rex, James Cameron
Description
Netrek-client-cow through 3.3.3 contains an out-of-bounds read vulnerability in short.c handleSMessage() that allows malicious servers to crash clients via an unchecked m_recpt index. Attackers controlling a Netrek server or intercepting the plaintext TCP connection can send SP_S_MESSAGE packets with m_recpt of 36 or more, reading past players[] and shipnos to deny service.

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