Justice AV Solutions (JAVS) Viewer Installer Embedded Malicious Code Vulnerability (CVE-2024-4978)
Severity: high · Patch status: unknown · Since 2024-05-29 · CVE-2024-4978
Justice AV Solutions (JAVS) Viewer installer contains a malicious version of ffmpeg.exe, named fffmpeg.exe (SHA256: 421a4ad2615941b177b6ec4ab5e239c14e62af2ab07c6df1741e2a62223223c4). When run, this creates a backdoor connection to a malicious C2 server. CISA added CVE-2024-4978 to its Known Exploited Vulnerabilities catalog on May 29, 2024, which means attackers are exploiting it in the wild.
What to do
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- US federal agencies must remediate by Jun 19, 2024 (BOD 22-01); treat that as the outer limit.
Sources
All live incidents on Threat Watch