by Kastro
Paper/Archive/CVE-2020-6016

CVE-2020-6016

checkpoint — Valve's Game Networking Sockets prior to version v1.2.0 improperly handles unreliable segments with negative offsets in function SNP_Rece…

EPSS 6%CVSS 9.8
critical.is priorityof 100
48
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 93.3.933 × 2018.7No public exploit+100.0SSVC exploitation: unknown+100.0
Description · from the CVE record

Valve's Game Networking Sockets prior to version v1.2.0 improperly handles unreliable segments with negative offsets in function SNP_ReceiveUnreliableSegment(), leading to a Heap-Based Buffer Underflow and a free() of memory not from the heap, resulting in a memory corruption and probably even a remote code execution.

Affected

ProductAffectedFixed inSource
Game Networking SocketsAll versions prior to v1.2.0–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

refgithub.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43refresearch.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets