[USN-4435-2] ClamAV vulnerabilities

[Leonidas S. Barbosa]

==========================================================================
Ubuntu Security Notice USN-4435-2
July 27, 2020

clamav vulnerabilities
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM
- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in ClamAV.

Software Description:
- clamav: Anti-virus utility for Unix

Details:

USN-4435-1 fixed several vulnerabilities in ClamAV. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

 It was discovered that ClamAV incorrectly handled parsing ARJ archives. A
 remote attacker could possibly use this issue to cause ClamAV to crash,
 resulting in a denial of service. (CVE-2020-3327)

 It was discovered that ClamAV incorrectly handled scanning malicious files.
 A local attacker could possibly use this issue to delete arbitrary files.
 (CVE-2020-3350)

 It was discovered that ClamAV incorrectly handled parsing EGG archives. A
 remote attacker could possibly use this issue to cause ClamAV to crash,
 resulting in a denial of service. (CVE-2020-3481)

Update instructions:

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

Ubuntu 14.04 ESM:
  clamav                          0.102.4+dfsg-0ubuntu0.14.04.1+esm1

Ubuntu 12.04 ESM:
  clamav                          0.102.4+dfsg-0ubuntu0.12.04.1

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:
  https://usn.ubuntu.com/4435-2
  https://usn.ubuntu.com/4435-1
  CVE-2020-3327, CVE-2020-3350, CVE-2020-3481
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