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CVE-2021-33603

MEDIUMCVSS 6.5/10EPSS 0.55%

Last modified

CVE-2021-33603 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the AVPACK module component used in certain F-Secure products can crash while scanning a fuzzed files. The exploit can be triggered remotely by an attacker. EPSS estimates a 0.55% chance of exploitation in the next 30 days.

Description

A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the AVPACK module component used in certain F-Secure products can crash while scanning a fuzzed files. The exploit can be triggered remotely by an attacker. A successful attack will result in Denial-of-Service (DoS) of the Anti-Virus engine.

Metrics

CVSS 3.1
6.5/10

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

EPSS Probability
0.55%

41.5th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

VendorProductVersions
F-SecureAtlantAll versions
F-SecureCloud Protection For SalesforceAll versions
F-SecureElements For Microsoft 365All versions
F-SecureInternet GatekeeperAll versions
F-SecureLinux SecurityAll versions
F-SecureElements Endpoint Detection And ResponseAll versions
F-SecureElements Endpoint ProtectionAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2021-33603?
A Denial-of-Service (DoS) vulnerability was discovered in F-Secure Atlant whereby the AVPACK module component used in certain F-Secure products can crash while scanning a fuzzed files. The exploit can be triggered remotely by an attacker. A successful attack will result in Denial-of-Service (DoS) of the Anti-Virus engine.
How severe is CVE-2021-33603?
CVE-2021-33603 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.55% probability of exploitation in the next 30 days.
How do I fix CVE-2021-33603?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-33603?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST