Vulnerability in quozl netrek-client-cow

[ Description ]Official description

netrek-client-cow through 3.3.3 contains a stack-based buffer overflow vulnerability in handleSMessage() in short.c that allows malicious servers to overflow a 100-byte stack buffer by sending oversized SP_S_MESSAGE packets. A malicious Netrek server or man-in-the-middle on the plaintext TCP connection can send overlong or unterminated message bodies to write server-controlled bytes onto the stack and crash the client.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ References ]References

• github.com/quozl/netrek-client-cow
• github.com/quozl/netrek-client-cow/blob/3.3.3/short.c
• github.com/quozl/netrek-client-cow/commit/fb322e74abee3b0b76a9c5a31df6aab5585d3127
• github.com/quozl/netrek-client-cow/issues/11
• www.vulncheck.com/advisories/netrek-client-cow-through-3.3.3-stack-buffer-overflow-via-…