CVE-2018-20817

high-risk

Published 2019-04-19

SV_SteamAuthClient in various Activision Infinity Ward Call of Duty games before 2015-08-11 is missing a size check when reading authBlob data into a buffer, which allows one to execute code on the remote target machine when sending a steam authentication request. This affects Call of Duty: Modern Warfare 2, Call of Duty: Modern Warfare 3, Call of Duty: Ghosts, Call of Duty: Advanced Warfare, Call of Duty: Black Ops 1, and Call of Duty: Black Ops 2.

Do I need to act?

3.1% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 9.8/10 Critical

NETWORK / LOW complexity

Affected Products (6)

Call Of Duty\

Affected Vendors

Activision

References (4)

Exploit https://github.com/RektInator/cod-steamauth-rce

Third Party Advisory https://github.com/momo5502/cod-exploits/tree/master/steam-auth

Exploit https://github.com/RektInator/cod-steamauth-rce

Third Party Advisory https://github.com/momo5502/cod-exploits/tree/master/steam-auth

/ 100

high-risk

Severity 32/34 · Critical

Exploitability 6/34 · Minimal

Exposure 13/34 · Low