USN-3722-1 introduced a regression in ClamAV.
USN-3722-1 fixed vulnerabilities in ClamAV. The new package introduced an issue which caused dpkg-reconfigure to enter an infinite loop. This update fixes the problem.
18 September 2018
A security issue affects these releases of Ubuntu and its derivatives:
USN-3722-1 introduced a regression in ClamAV.
USN-3722-1 fixed vulnerabilities in ClamAV. The new package introduced an issue which caused dpkg-reconfigure to enter an infinite loop. This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that ClamAV incorrectly handled parsing certain HWP files. A remote attacker could use this issue to cause ClamAV to hang, resulting in a denial of service. (CVE-2018-0360)
It was discovered that ClamAV incorrectly handled parsing certain PDF files. A remote attacker could use this issue to cause ClamAV to hang, resulting in a denial of service. (CVE-2018-0361)
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.