CVE Vulnerability

CVE-2021-30481

Valve Steam through 2021-04-10, when a Source engine game is installed, allows remote authenticated users to execute arbitrary code because of a buffer overflow that occurs for a Steam invite after one click.

6 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 6.8 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 2.3 / Impact : 6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References
Link Resource
https://www.youtube.com/watch?v=rNQn--9xR1Q Exploit Third Party Advisory
https://news.ycombinator.com/item?id=26762170 Issue Tracking Third Party Advisory
https://twitter.com/the_secret_club/status/1380868759129296900 Exploit Third Party Advisory
https://twitter.com/floesen_/status/1337107178096881666 Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:valvesoftware:steam_client:*:*:*:*:*:*:*:*
Information

Published : 2021-04-10 07:15

Updated : 2022-02-07 07:09

NVD link : CVE-2021-30481

Mitre link : CVE-2021-30481

Products Affected

Steam Client

Valvesoftware

CWE
CWE-120