Debian Security Advisory

DLA-1953-1 clamav -- LTS security update

Date Reported:
10 Oct 2019
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 34359.
In Mitre's CVE dictionary: CVE-2019-12625, CVE-2019-12900.
More information:

It was discovered that clamav, the open source antivirus engine, is affected by the following security vulnerabilities:

  • CVE-2019-12625

    Denial of Service (DoS) vulnerability, resulting from excessively long scan times caused by non-recursive zip bombs. Among others, this issue was mitigated by introducing a scan time limit.

  • CVE-2019-12900

    Out-of-bounds write in ClamAV's NSIS bzip2 library when attempting decompression in cases where the number of selectors exceeded the max limit set by the library.

    This update triggers a transition from libclamav7 to libclamav9. As a result, several other packages will be recompiled against the fixed package after the release of this update: dansguardian, havp, python-pyclamav, c-icap-modules.

For Debian 8 Jessie, these problems have been fixed in version 0.101.4+dfsg-0+deb8u1.

We recommend that you upgrade your clamav packages.

Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: