Debian Security Advisory

DLA-2222-1 libexif -- LTS security update

Date Reported:

28 May 2020

Affected Packages:

Vulnerable:

Yes

Security database references:

In the Debian bugtracking system: Bug 918730, Bug 961407, Bug 961409, Bug 961410.
In Mitre's CVE dictionary: CVE-2018-20030, CVE-2020-13112, CVE-2020-13113, CVE-2020-13114.

More information:

Various minor vulnerabilities have been addredd in libexif, a library to parse EXIF metadata files.

CVE-2018-20030
This issue had already been addressed via DLA-2214-1. However, upstream provided an updated patch, so this has been followed up on.
CVE-2020-13112
Several buffer over-reads in EXIF MakerNote handling could have lead to information disclosure and crashes. This issue is different from already resolved CVE-2020-0093.
CVE-2020-13113
Use of uninitialized memory in EXIF Makernote handling could have lead to crashes and potential use-after-free conditions.
CVE-2020-13114
An unrestricted size in handling Canon EXIF MakerNote data could have lead to consumption of large amounts of compute time for decoding EXIF data.

For Debian 8 Jessie, these problems have been fixed in version 0.6.21-2+deb8u3.

We recommend that you upgrade your libexif packages.

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