CVE-2020-21688
ffmpeg: A heap-use-after-free in the av_freep function in libavutil/mem.c of FFmpeg 4.2 allows attackers to execute arbitrary...
CVE-2020-21688 is fixed in 25 products on 1 platform, first by ffmpeg 7:3.4.11-0ubuntu0.1, released August 11, 2023. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0173
77th percentile
A heap-use-after-free in the av_freep function in libavutil/mem.c of FFmpeg 4.2 allows attackers to execute arbitrary code.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| ffmpeg · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | ffmpeg 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| ffmpeg · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | ffmpeg 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavcodec-extra · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavcodec-extra 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavcodec-extra · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavcodec-extra 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavcodec-extra57 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavcodec-extra57 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavcodec-extra58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavcodec-extra58 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavcodec57 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavcodec57 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavcodec58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavcodec58 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavdevice57 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavdevice57 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavdevice58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavdevice58 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavfilter-extra · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavfilter-extra 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavfilter-extra · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavfilter-extra 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavfilter-extra6 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavfilter-extra6 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavfilter-extra7 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavfilter-extra7 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavfilter6 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavfilter6 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavfilter7 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavfilter7 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavformat57 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavformat57 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavformat58 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavformat58 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavresample3 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavresample3 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavresample4 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavresample4 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libavutil55 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libavutil55 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libavutil56 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libavutil56 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libpostproc54 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libpostproc54 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libpostproc55 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libpostproc55 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libswresample2 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libswresample2 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libswresample3 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libswresample3 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
| libswscale4 · Ubuntu 18.04.6 LTS (bionic) | 7:3.4.11-0ubuntu0.1 | libswscale4 7:3.4.11-0ubuntu0.1 | Aug 11, 2023 |
| libswscale5 · Ubuntu 20.04 LTS (focal) | 7:4.2.7-0ubuntu0.1 | libswscale5 7:4.2.7-0ubuntu0.1 | Aug 11, 2023 |
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