Debian LTS: DLA-2742-1: ffmpeg security update
Summary
CVE-2020-21041
Buffer Overflow vulnerability exists via apng_do_inverse_blend in
libavcodec/pngenc.c, which could let a remote malicious user cause a
Denial of Service.
CVE-2020-22015
Buffer Overflow vulnerability in mov_write_video_tag due to the out of
bounds in libavformat/movenc.c, which could let a remote malicious user
obtain sensitive information, cause a Denial of Service, or execute
arbitrary code.
CVE-2020-22016
A heap-based Buffer Overflow vulnerability at libavcodec/get_bits.h when
writing .mov files, which might lead to memory corruption and other
potential consequences.
CVE-2020-22020
Buffer Overflow vulnerability in the build_diff_map function in
libavfilter/vf_fieldmatch.c, which could let a remote malicious user cause
a Denial of Service.
CVE-2020-22021
Buffer Overflow vulnerability at filter_edges function in
libavfilter/vf_yadif.c, which could let a remote malicious user cause a
Denial of Service.
CVE-2020-22022
A heap-based Buffer Overflow vulnerability exists in filter_frame at
libavfilter/vf_fieldorder.c, which might lead to memory corruption and other
potential consequences.
CVE-2020-22023
A heap-based Buffer Overflow vulnerabililty exists in filter_frame at
libavfilter/vf_bitplanenoise.c, which might lead to memory corruption and
other potential consequences.
CVE-2020-22025
A heap-based Buffer Overflow vulnerability exists in gaussian_blur at
libavfilter/vf_edgedetect.c, which might lead to memory corruption and other
potential consequences.
CVE-2020-22026
Buffer Overflow vulnerability exists in the config_input function at
libavfilter/af_tremolo.c, which could let a remote malicious user cause a
Denial of Service.
CVE-2020-22028
Buffer Overflow vulnerability in filter_vertically_8 at
libavfilter/vf_avgblur.c, which could cause a remote Denial of Service.
CVE-2020-22031
A Heap-based Buffer Overflow vulnerability in filter16_complex_low, which
might lead to memory corruption and other potential consequences.
CVE-2020-22032
A heap-based Buffer Overflow vulnerability in gaussian_blur, which might
lead to memory corruption and other potential consequences.
CVE-2020-22036
A heap-based Buffer Overflow vulnerability in filter_intra at
libavfilter/vf_bwdif.c, which might lead to memory corruption and other
potential consequences.
CVE-2021-3566
The tty demuxer did not have a 'read_probe' function assigned to it. By
crafting a legitimate "ffconcat" file that references an image, followed by
a file the triggers the tty demuxer, the contents of the second file will be
copied into the output file verbatim (as long as the `-vcodec copy` option
is passed to ffmpeg).
CVE-2021-38114
libavcodec/dnxhddec.c does not check the return value of the init_vlc
function. Crafted DNxHD data can cause unspecified impact.
For Debian 9 stretch, these problems have been fixed in version
7:3.2.15-0+deb9u3.
We recommend that you upgrade your ffmpeg packages.
For the detailed security status of ffmpeg please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/source-package/ffmpeg
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
