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CVE-2022-20770

HIGHCVSS 7.5/10EPSS 6.18%

Last modified

CVE-2022-20770 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in CHM file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog. EPSS estimates a 6.18% chance of exploitation in the next 30 days.

Description

On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in CHM file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional information becomes available.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
6.18%

92.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ClamavClamav<= 0.103.5
ClamavClamav>= 0.104.0, <= 0.104.2
CiscoSecure Endpoint< 1.16.3
CiscoSecure Endpoint< 1.17.2
CiscoSecure Endpoint< 7.5.5
CiscoSecure Endpoint>= 1.18.0, < 1.18.2
FedoraprojectFedora34
FedoraprojectFedora35
FedoraprojectFedora36
DebianDebian Linux9.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2022-20770?
On April 20, 2022, the following vulnerability in the ClamAV scanning library versions 0.103.5 and earlier and 0.104.2 and earlier was disclosed: A vulnerability in CHM file parser of Clam AntiVirus (ClamAV) versions 0.104.0 through 0.104.2 and LTS version 0.103.5 and prior versions could allow an unauthenticated, remote attacker to cause a denial of service condition on an affected device. For a description of this vulnerability, see the ClamAV blog. This advisory will be updated as additional information becomes available.
How severe is CVE-2022-20770?
CVE-2022-20770 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 6.18% probability of exploitation in the next 30 days.
How do I fix CVE-2022-20770?
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.

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Source: NVD / NIST