Denial-of-service of the antivirus engine (infinite loop and system hang) when scanning WIM archive.
RISK LEVEL: Medium
FIX: No user action is required. The required fix has been published through automatic update channel with Capricorn update 2021-08-25_04.
A vulnerability affecting F-Secure antivirus engine was discovered whereby scanning WIM archive file can lead to denial-of-service (infinite loop and freezes AV engine scanner). The vulnerability can be exploited remotely by an attacker. A successful attack will result in denial-of-service of the antivirus engine.
This issue was reported to F-Secure through the Vulnerability Reward Program. No known exploit or attack has been seen in the wild.
F-Secure Corporation would like to thank faty420 for bringing this issue to our attention.
Date Issued: 2021-09-03