CVE-2019-9718: canonical ubuntu_linux Out-of-bounds Read
CVSS: 6.5v3.1MediumModified
AliasesUBUNTU-CVE-2019-9718DEBIAN-CVE-2019-9718
Published 12-03-2019Last modified 04-08-2024
Vulnerability summary
CVE-2019-9718 is a medium (CVSS 6.5) Out-of-bounds Read vulnerability in canonical ubuntu_linux. EPSS estimates a 1.57% chance of exploitation in the next 30 days, higher than 74.8% of scored vulnerabilities.
CVSS score
6.5/10
010
Medium · v3.1 (NVD)EPSS score
1.57%
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 4 · Related 3Timeline
- 12-03-2019PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
In FFmpeg 3.2 and 4.1, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because ff_htmlmarkup_to_ass in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.
CVSS metrics
5 scores · 3 sources · 3 versionsMedium 6.5Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesAll 3 agree
- OSV · UbuntuEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
- OSV · DebianEcosystem advisory · calculated6.5MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Medium 6.5Preferred score · OSV · Ubuntu (Ecosystem advisory) · calculated from vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:HSourcesSingle source
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.57%
Chance of exploitation in the next 30 days
Percentile
75%
Versus all other CVEs
30-day change
0.00 pp
From 1.57% on 18-09-2026
18-09-202618-10-2026
EPSS score1.57%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Debian2 products
- ffmpeg< 7:4.1.3-1
- debian_linuxEOL9.0
Canonical1 product
- ubuntu_linuxEOL18.04 | 18.10 | 19.04
Ffmpeg1 product
- ffmpegEOL3.2 | 4.1
Ubuntu1 product
- ffmpeg< 7:3.4.6-0ubuntu0.18.04.1
4 vendors · 5 products
References
10 links- git.ffmpeg.org/gitweb/ffmpeg.git/commit/1f00c97bc3475c477f3c468cf2d924d5761d0982X Refsource MISCREPORTPatchThird Party Advisory
- github.com/FFmpeg/FFmpeg/commit/23ccf3cabb4baf6e8af4b1af3fcc59c904736f21X Refsource MISCPatchThird Party Advisory