Debian LTS: DLA-2214-1: libexif security update
Summary
Various vulnerabilities have been addressed in libexif, a library to
parse EXIF metadata files.
CVE-2016-6328
An integer overflow when parsing the MNOTE entry data of the input
file had been found. This could have caused Denial-of-Service (DoS)
and Information Disclosure (disclosing some critical heap chunk
metadata, even other applications' private data).
CVE-2017-7544
libexif had been vulnerable to out-of-bounds heap read vulnerability
in exif_data_save_data_entry function in libexif/exif-data.c caused
by improper length computation of the allocated data of an ExifMnote
entry which could have caused denial-of-service or possibly information
disclosure.
CVE-2018-20030
An error when processing the EXIF_IFD_INTEROPERABILITY and
EXIF_IFD_EXIF tags within libexif version could have been exploited
to exhaust available CPU resources.
CVE-2020-0093
In exif_data_save_data_entry of exif-data.c, there was a possible out
of bounds read due to a missing bounds check. This could have lead to
local information disclosure with no additional execution privileges
needed. User interaction was needed for exploitation.
CVE-2020-12767
libexif had a divide-by-zero error in exif_entry_get_value in
exif-entry.c
For Debian 8 "Jessie", these problems have been fixed in version
0.6.21-2+deb8u2.
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, https://sunweavers.net/
Package :libexif
