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CheckpointCVE-2020-6016

HistoryNov 18, 2020 - 3:15 p.m.

CVE-2020-6016

2020-11-1815:15:13

CWE-787

CWE-590

checkpoint

web.nvd.nist.gov

valve

game networking sockets

cve-2020-6016

heap-based buffer

remote code execution

nvd

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.8

Confidence

High

EPSS

0.011

Percentile

84.6%

JSON

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

Nvd

Node

valvesoftwaregame_networking_socketsRange<1.2.0

VendorProductVersionCPE
valvesoftwaregame_networking_sockets*cpe:2.3:a:valvesoftware:game_networking_sockets:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
valvesoftware	game_networking_sockets	*	cpe:2.3:a:valvesoftware:game_networking_sockets::::::::

CNA Affected

[
  {
    "product": "Game Networking Sockets",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "All versions prior to v1.2.0"
      }
    ]
  }
]

References

github.com/ValveSoftware/GameNetworkingSockets/commit/e0c86dcb9139771db3db0cfdb1fb8bef0af19c43

research.checkpoint.com/2020/game-on-finding-vulnerabilities-in-valves-steam-sockets/

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

9.8

Confidence

High

EPSS

0.011

Percentile

84.6%

JSON

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