Ubuntu Security Notices
USN-4918-3

USN-4918-3: ClamAV regression

Publication date

3 May 2021

Overview

USN-4918-1 introduced a regression in ClamAV that could cause it to fail to scan.

Releases

21.04 20.10 20.04 LTS 18.04 LTS 16.04 LTS 14.04 LTS

Packages

clamav - Anti-virus utility for Unix

Details

USN-4918-1 fixed vulnerabilities in ClamAV. The updated package could
fail to properly scan in some situations. This update fixes
the problem.

Original advisory details:

It was discovered that ClamAV incorrectly handled parsing Excel documents.
A remote attacker could possibly use this issue to cause ClamAV to hang,
resulting in a denial of service. (CVE-2021-1252)

It was discovered that ClamAV incorrectly handled parsing PDF documents. A
remote attacker could possibly use this issue to cause ClamAV to crash,
resulting in a denial of service. (CVE-2021-1404)

It was discovered that ClamAV incorrectly handled parsing email. A remote
attacker could possibly use this issue to cause ClamAV to crash, resulting
in a denial of service. (CVE-2021-1405)

USN-4918-1 fixed vulnerabilities in ClamAV. The updated package could
fail to properly scan in some situations. This update fixes
the problem.

Original advisory details:

It was discovered that ClamAV incorrectly handled parsing Excel documents.
A remote attacker could possibly use this issue to cause ClamAV to hang,
resulting in a denial of service. (CVE-2021-1252)

It was discovered that ClamAV incorrectly handled parsing PDF documents. A
remote attacker could possibly use this issue to cause ClamAV to crash,
resulting in a denial of service. (CVE-2021-1404)

It was discovered that ClamAV incorrectly handled parsing email. A remote
attacker could possibly use this issue to cause ClamAV to crash, resulting
in a denial of service. (CVE-2021-1405)

Update instructions

This update uses a new upstream release, which includes additional bug fixes. In general, a standard system update will make all the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release	Package Version
21.04 hirsute	clamav – 0.103.2+dfsg-1ubuntu0.21.04.1
21.04 hirsute	libclamav9 – 0.103.2+dfsg-1ubuntu0.21.04.1
20.10 groovy	clamav – 0.103.2+dfsg-0ubuntu0.20.10.2
20.10 groovy	libclamav9 – 0.103.2+dfsg-0ubuntu0.20.10.2
20.04 focal	clamav – 0.103.2+dfsg-0ubuntu0.20.04.2
20.04 focal	libclamav9 – 0.103.2+dfsg-0ubuntu0.20.04.2
18.04 bionic	clamav – 0.103.2+dfsg-0ubuntu0.18.04.2
18.04 bionic	libclamav9 – 0.103.2+dfsg-0ubuntu0.18.04.2
16.04 xenial	clamav – 0.103.2+dfsg-0ubuntu0.16.04.1+esm1
16.04 xenial	libclamav9 – 0.103.2+dfsg-0ubuntu0.16.04.1+esm1
14.04 trusty	clamav – 0.103.2+dfsg-0ubuntu0.14.04.1+esm2
14.04 trusty	libclamav9 – 0.103.2+dfsg-0ubuntu0.14.04.1+esm2

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Get Ubuntu Pro

References

https://launchpad.net/bugs/1926300