Description (CNA)
Valve Steam Client for Windows through 2019-08-20 has weak folder permissions, leading to privilege escalation (to NT AUTHORITY\SYSTEM) via crafted use of CreateMountPoint.exe and SetOpLock.exe to leverage a TOCTOU race condition.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| n/a / n/a | affected n/a |
CWE
No CWE identifiers supplied.
References
- https://amonitoring.ru/article/onemore_steam_eop_0day/
- https://habr.com/ru/company/pm/blog/464367/
- https://www.youtube.com/watch?v=I93aH86BUaE
- https://www.youtube.com/watch?v=ZCHrjP0cMew
ADP enrichment
No English description supplied.