Debian Security Advisory

DLA-2911-1 apng2gif -- LTS security update

Date Reported:
04 Feb 2022
Affected Packages:
Security database references:
In the Debian bugtracking system: Bug 854447.
In Mitre's CVE dictionary: CVE-2017-6960, CVE-2017-6961, CVE-2017-6962.
More information:

Several vulnerabilities have been discovered in apng2gif, a tool for converting APNG images to animated GIF format. Improper sanitization of user input can result in denial of service (application crash) or possible execution of arbitrary code if a malformed image file is processed.

For Debian 9 stretch, these problems have been fixed in version 1.8-0.1~deb9u1.

We recommend that you upgrade your apng2gif packages.

For the detailed security status of apng2gif please refer to its security tracker page at:

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