RARLAB WinRAR Code Execution Vulnerability (CVE-2023-38831)
Severity: high · Patch status: unknown · Since 2023-08-24 · CVE-2023-38831
RARLAB WinRAR contains an unspecified vulnerability that allows an attacker to execute code when a user attempts to view a benign file within a ZIP archive. CISA added CVE-2023-38831 to its Known Exploited Vulnerabilities catalog on Aug 24, 2023, which means attackers are exploiting it in the wild. CISA reports known use in ransomware campaigns.
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Sep 14, 2023 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch