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[SECURITY] [DLA 2222-1] libexif security update

Package        : libexif
Version        : 0.6.21-2+deb8u3
CVE ID         : CVE-2018-20030 CVE-2020-13112 CVE-2020-13113 CVE-2020-13114
Debian Bug     : 918730 961407 961409 961410

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


    This issue had already been addressed via DLA-2214-1. However, upstream
    provided an updated patch, so this has been followed up on.


    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.


    Use of uninitialized memory in EXIF Makernote handling could have
    lead to crashes and potential use-after-free conditions.


    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

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


mike gabriel aka sunweaver (Debian Developer)
fon: +49 (1520) 1976 148

GnuPG Fingerprint: 9BFB AEE8 6C0A A5FF BF22  0782 9AF4 6B30 2577 1B31
mail: sunweaver@debian.org, http://sunweavers.net

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