CVE-2021-36934 — Microsoft Windows SAM Local Privilege Escalation Vulnerability
CVE-2021-36934: Microsoft Windows SAM Local Privilege Escalation Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Microsoft |
| Product | Windows |
| Date added | 2022-02-10 |
| Due date | 2022-02-24 |
| Ransomware campaign use | Unknown |
Description
If a Volume Shadow Copy (VSS) shadow copy of the system drive is available, users can read the SAM file which would allow any user to escalate privileges to SYSTEM level.
Required action (CISA)
Apply updates per vendor instructions.
Notes
https://nvd.nist.gov/vuln/detail/CVE-2021-36934
Weakness behind it
CISA records this vulnerability as an instance of CWE-1220. From there the chain continues into CAPEC attack patterns and ATT&CK techniques, all inside this corpus.
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-36934
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
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