CVE-2021-30481

Valve Steam before 2021-04-17, 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.
Classic Buffer Overflow
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
8 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
mitreCNA
8 HIGH
NETWORK
HIGH
LOW
CVSS:3.1/AC:H/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:R
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 93%
VendorProductVersion
valvesoftwaresteam_client
𝑥
≤ 2021-04-10
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://news.ycombinator.com/item?id=26762170
https://twitter.com/floesen_/status/1337107178096881666
https://twitter.com/the_secret_club/status/1380868759129296900
https://www.youtube.com/watch?v=rNQn--9xR1Q
https://news.ycombinator.com/item?id=26762170
https://twitter.com/floesen_/status/1337107178096881666
https://twitter.com/the_secret_club/status/1380868759129296900
https://www.youtube.com/watch?v=rNQn--9xR1Q