Vulnerability Details : CVE-2020-6016
Potential exploit
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.
Published
2020-11-18 15:15:13
Updated
2022-10-21 19:37:45
Vulnerability category: Memory CorruptionExecute code
Products affected by CVE-2020-6016
- cpe:2.3:a:valvesoftware:game_networking_sockets:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-6016
10.04%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 92 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-6016
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
10.0
|
HIGH | AV:N/AC:L/Au:N/C:C/I:C/A:C |
10.0
|
10.0
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2020-6016
-
The product calls free() on a pointer to memory that was not allocated using associated heap allocation functions such as malloc(), calloc(), or realloc().Assigned by: cve@checkpoint.com (Secondary)
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-6016
-
https://github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43
Drop unreliable segments with weird offset/size. · ValveSoftware/GameNetworkingSockets@e0c86dc · GitHubPatch;Third Party Advisory
-
https://research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/
Game On - Finding vulnerabilities in Valve’s “Steam Sockets” - Check Point ResearchExploit;Third Party Advisory
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