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AUSCERT External Security Bulletin Redistribution
ESB-2022.2428
USN-5423-1: ClamAV vulnerabilities
18 May 2022
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AusCERT Security Bulletin Summary
---------------------------------
Product: ClamAV
Publisher: Ubuntu
Operating System: Ubuntu
Resolution: Patch/Upgrade
CVE Names: CVE-2022-20796 CVE-2022-20792 CVE-2022-20785
CVE-2022-20771 CVE-2022-20770
Original Bulletin:
https://ubuntu.com/security/notices/USN-5423-1
Comment: CVSS (Max): 7.8 CVE-2022-20792 (CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
CVSS Source: NVD, [SUSE]
Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
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USN-5423-1: ClamAV vulnerabilities
17 May 2022
Several security issues were fixed in ClamAV.
Releases
o Ubuntu 22.04 LTS
o Ubuntu 21.10
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
Packages
o clamav - Anti-virus utility for Unix
Details
Michal Dardas discovered that ClamAV incorrectly handled parsing CHM files.
A remote attacker could possibly use this issue to cause ClamAV to stop
responding, resulting in a denial of service. ( CVE-2022-20770 )
Michal Dardas discovered that ClamAV incorrectly handled parsing TIFF
files. A remote attacker could possibly use this issue to cause ClamAV to
stop responding, resulting in a denial of service. ( CVE-2022-20771 )
Michal Dardas discovered that ClamAV incorrectly handled parsing HTML
files. A remote attacker could possibly use this issue to cause ClamAV to
consume resources, resulting in a denial of service. ( CVE-2022-20785 )
Michal Dardas discovered that ClamAV incorrectly handled loading the
signature database. A remote attacker could possibly use this issue to
cause ClamAV to crash, resulting in a denial of service, or possibly
execute arbitrary code. ( CVE-2022-20792 )
Alexander Patrakov and Antoine Gatineau discovered that ClamAV incorrectly
handled the scan verdict cache check. A remote attacker could possibly use
this issue to cause ClamAV to crash, resulting in a denial of service, or
possibly execute arbitrary code.( CVE-2022-20796 )
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 22.04
o clamav - 0.103.6+dfsg-0ubuntu0.22.04.1
Ubuntu 21.10
o clamav - 0.103.6+dfsg-0ubuntu0.21.10.1
Ubuntu 20.04
o clamav - 0.103.6+dfsg-0ubuntu0.20.04.1
Ubuntu 18.04
o clamav - 0.103.6+dfsg-0ubuntu0.18.04.1
This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.
References
o CVE-2022-20770
o CVE-2022-20785
o CVE-2022-20792
o CVE-2022-20771
o CVE-2022-20796
Related notices
o USN-5423-2 : clamav-testfiles, clamav, libclamav-dev, clamav-daemon,
clamav-freshclam, clamav-docs, clamav-milter, clamav-base, libclamav9,
clamdscan
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