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CVE-2023-20197

Publication date 17 August 2023

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

7.5 · High

Score breakdown

A vulnerability in the filesystem image parser for Hierarchical File System Plus (HFS+) of ClamAV could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. This vulnerability is due to an incorrect check for completion when a file is decompressed, which may result in a loop condition that could cause the affected software to stop responding. An attacker could exploit this vulnerability by submitting a crafted HFS+ filesystem image to be scanned by ClamAV on an affected device. A successful exploit could allow the attacker to cause the ClamAV scanning process to stop responding, resulting in a DoS condition on the affected software and consuming available system resources. For a description of this vulnerability, see the ClamAV blog .

Read the notes from the security team

Status

Package Ubuntu Release Status
clamav 23.04 lunar
Fixed 0.103.9+dfsg-0ubuntu0.23.04.1
22.04 LTS jammy
Fixed 0.103.9+dfsg-0ubuntu0.22.04.1
20.04 LTS focal
Fixed 0.103.9+dfsg-0ubuntu0.20.04.1
18.04 LTS bionic
16.04 LTS xenial
14.04 LTS trusty

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Notes

mdeslaur

per upstream: "This issue affects versions 1.1.0, 1.0.1 through 1.0.0, 0.105.2 through 0.105.0, 0.104.4 through 0.104.0, and 0.103.8 through 0.103.0."

Severity score breakdown

Parameter Value
Base score 7.5 · High
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

Other references