CVE-2021-30481 Information

Description

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.

CVSS Vector

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

Reference

https://www.youtube.com/watch?v=rNQn–9xR1Q https://news.ycombinator.com/item?id=26762170 https://twitter.com/the_secret_club/status/1380868759129296900 https://twitter.com/floesen_/status/1337107178096881666

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.0