CVE-2021-33602

Denial-of-Service (DoS) Vulnerability

CVSS 5.5 MEDIUMEPSS 0.6%

Vexday Risk Score

13Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 5.5EPSS 0.6%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

06 Oct 2021Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A vulnerability affecting the F-Secure Antivirus engine was discovered when the engine tries to unpack a zip archive (LZW decompression method), and this can crash the scanning engine. The vulnerability can be exploited remotely by an attacker. A successful attack will result in Denial-of-Service of the Anti-Virus engine.

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L

Affected products

F-Secure · F-Secure endpoint protection products on Windows and Mac. F-Secure Linux Security (32-bit) F-Secure Linux Security 64 F-Secure Atlant & F-Secure Cloud Protection for Salesforce

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References

https://www.f-secure.com/en/business/support-and-downloads/security-advisories