Vulnerability Details : CVE-2020-6017
Potential exploit
Valve's Game Networking Sockets prior to version v1.2.0 improperly handles long unreliable segments in function SNP_ReceiveUnreliableSegment() when configured to support plain-text messages, leading to a Heap-Based Buffer Overflow and resulting in a memory corruption and possibly even a remote code execution.
Published
2020-12-03 14:15:11
Updated
2022-04-12 16:19:17
Vulnerability category: OverflowMemory CorruptionExecute code
Products affected by CVE-2020-6017
- cpe:2.3:a:valvesoftware:game_networking_sockets:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-6017
0.75%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-6017
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
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-2020-6017
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.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-2020-6017
-
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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