Debian LTS: Security Advisory for ffmpeg (DLA-2742-1)

Published: 2021-08-16 03:00:18
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P

Summary:
The remote host is missing an update for the 'ffmpeg' Linux Distribution Package(s) announced via the DLA-2742-1 advisory.

Detection Method:
Checks if a vulnerable Linux Distribution Package version is present on the target host.

Technical Details:
Multiple issues have been discovered in ffmpeg. 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.

Affected Versions:
'ffmpeg' Linux Distribution Package(s) on Debian Linux.

Recommendations:
For Debian 9 stretch, these problems have been fixed in version 7:3.2.15-0+deb9u3. We recommend that you upgrade your ffmpeg Linux Distribution Packages.

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2020-21041
https://nvd.nist.gov/vuln/detail/CVE-2020-22015
https://nvd.nist.gov/vuln/detail/CVE-2020-22016
https://nvd.nist.gov/vuln/detail/CVE-2020-22020
https://nvd.nist.gov/vuln/detail/CVE-2020-22021
https://nvd.nist.gov/vuln/detail/CVE-2020-22022
https://nvd.nist.gov/vuln/detail/CVE-2020-22023
https://nvd.nist.gov/vuln/detail/CVE-2020-22025
https://nvd.nist.gov/vuln/detail/CVE-2020-22026
https://nvd.nist.gov/vuln/detail/CVE-2020-22028
https://nvd.nist.gov/vuln/detail/CVE-2020-22031
https://nvd.nist.gov/vuln/detail/CVE-2020-22032
https://nvd.nist.gov/vuln/detail/CVE-2020-22036
https://nvd.nist.gov/vuln/detail/CVE-2021-3566
https://nvd.nist.gov/vuln/detail/CVE-2021-38114

References:

https://lists.debian.org/debian-lts-announce/2021/08/msg00018.html
https://security-tracker.debian.org/tracker/DLA-2742-1

Severity
Medium
CVSS Score
6.8
Published
2021-08-16
Modified
2021-08-17
Category
Debian Local Security Checks

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