The following updates has been released for Ubuntu Linux 12.04 ESM:

USN-3811-2: SpamAssassin vulnerability
USN-3814-3: ClamAV vulnerabilities

USN-3811-2: SpamAssassin vulnerability

==========================================================================
Ubuntu Security Notice USN-3811-2
November 13, 2018

spamassassin vulnerability
==========================================================================

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

- Ubuntu 12.04 ESM

Summary:

SpamAssassin could be made to crash if it received
a specially crafted file.

Software Description:
- spamassassin: Perl-based spam filter using text analysis

Details:

USN-3811-1 fixed a vulnerability in SpamAssassin. This update provides
the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 It was discovered that SpamAssassin incorrectly handled certain
 unclosed tags in emails. A remote attacker could possibly use this
 issue to cause a denial of service. (CVE-2017-15705)

Update instructions:

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

Ubuntu 12.04 ESM:
  spamassassin 3.3.2-2ubuntu1.2

In general, a standard system update will make all the necessary
changes.

References:
  https://usn.ubuntu.com/usn/usn-3811-2
  https://usn.ubuntu.com/usn/usn-3811-1
  CVE-2017-15705

USN-3814-3: ClamAV vulnerabilities

==========================================================================
Ubuntu Security Notice USN-3814-3
November 13, 2018

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

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

- Ubuntu 12.04 ESM

Summary:

Several security issues were fixed in ClamAV.

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

Details:

USN-3814-2 fixed several vulnerabilities in clamav. This update
provides the corresponding update for Ubuntu 12.04 ESM.

Original advisory details:

 It was discovered ClamAV incorrectly handled certain malformed CAB
 files. A remote attacker could use this issue to cause ClamAV to
 crash, resulting in a denial of service. (CVE-2018-18584,CVE-2018-
18585)

Update instructions:

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

Ubuntu 12.04 ESM:
  clamav 0.100.2+dfsg-1ubuntu0.12.04.2

In general, a standard system update will make all the necessary
changes.

References:
  https://usn.ubuntu.com/usn/usn-3814-3
  https://usn.ubuntu.com/usn/usn-3814-1
  CVE-2018-18584, CVE-2018-18585