CVEvulnerability
CVE-2020-6016
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2020-11-18
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 10.0 HIGH — AV:N/AC:L/Au:N/C:C/I:C/A:C
- Weaknesses
- CWE-590, CWE-787
Description
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 configurations
• valvesoftware game networking sockets (< 1.2.0)
Related
References
- https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43 Patch, Third Party Advisory
- https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/ Exploit, Third Party Advisory
- https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43 Patch, Third Party Advisory
- https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/ Exploit, Third Party Advisory