CVE-2019-17539: canonical ubuntu_linux NULL Pointer Dereference
CVSS: 9.8v3.1CriticalModified
AliasesUBUNTU-CVE-2019-17539DEBIAN-CVE-2019-17539CGA-22rc-3mh9-cpmjCGA-5vr9-gr59-hghqCGA-c23x-h6x5-j2j9CGA-cjrw-j5fh-86q7CGA-h5g5-r3hv-9rmfCGA-q2mm-fx9p-qrfgCGA-x7hf-qf95-9j57CGA-xw9v-wr3c-jq3j
Published 14-10-2019Last modified 05-08-2024
Vulnerability summary
CVE-2019-17539 is a critical (CVSS 9.8) NULL Pointer Dereference vulnerability in canonical ubuntu_linux. EPSS estimates a 2.03% chance of exploitation in the next 30 days, higher than 80.7% of scored vulnerabilities.
CVSS score
9.8/10
010
Critical · v3.1 (NVD)EPSS score
2.03%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Advisory lineage
Upstream 0 · Downstream 7 · Related 4Timeline
- 14-10-2019PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In FFmpeg before 4.2, avcodec_open2 in libavcodec/utils.c allows a NULL pointer dereference and possibly unspecified other impact when there is no valid close function pointer.
CVSS metrics
5 scores · 4 sources · 2 versionsCritical 9.8Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HSourcesAll 4 agree
- OSV · UbuntuEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · DebianEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- OSV · ChainguardEcosystem advisory · calculated9.8CriticalCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
High 7.5Preferred score · NVD (NIST)
AV:N/AC:L/Au:N/C:P/I:P/A:PSourcesSingle source
EPSS trend
Probability
2.03%
Chance of exploitation in the next 30 days
Percentile
81%
Versus all other CVEs
30-day change
0.00 pp
From 2.03% on 19-09-2026
19-09-202619-10-2026
EPSS score2.03%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Chainguard4 products
- torchaudio-ffmpeg-tarballsAll versions (No fix recorded)
- torchaudio-ffmpeg-tarballs-4.4.4All versions (No fix recorded)
- torchaudio-ffmpeg-tarballs-5.0.3All versions (No fix recorded)
- torchaudio-ffmpeg-tarballs-6.0All versions (No fix recorded)
Debian2 products
- ffmpeg< 7:4.2.1-1
- debian_linuxEOL9.0 | 10.0
Ubuntu2 products
- ffmpeg< 7:3.4.8-0ubuntu0.2
- libavAll versions (No fix recorded)
Canonical1 product
- ubuntu_linuxEOL16.04 | 18.04 | 20.04
Ffmpeg1 product
- ffmpeg< 3.4.7 | ≥ 4.0, < 4.0.5 | ≥ 4.1, < 4.1.5
5 vendors · 10 products
References
10 links- github.com/FFmpeg/FFmpeg/commit/8df6884832ec413cf032dfaa45c23b1c7876670cX Refsource MISCFIXPatchThird Party Advisory
- bugs.chromium.org/p/oss-fuzz/issues/detail?id=15733X Refsource MISCREPORTIssue TrackingThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/01/msg00026.htmlMailing ListX Refsource MLISTAdvisoryThird Party Advisory