CVE-2018-13305: ffmpeg Out-of-bounds Read
CVSS: 8.1v3.0HighModified
AliasesUBUNTU-CVE-2018-13305
Published 05-07-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-13305 is a high (CVSS 8.1) Out-of-bounds Read vulnerability in ffmpeg. EPSS estimates a 1.41% chance of exploitation in the next 30 days, higher than 72.2% of scored vulnerabilities.
CVSS score
8.1/10
010
High · v3.0 (NVD)EPSS score
1.41%
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 3 · Related 3Timeline
- 05-07-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
In FFmpeg 4.0.1, due to a missing check for negative values of the mquant variable, the vc1_put_blocks_clamped function in libavcodec/vc1_block.c may trigger an out-of-array access while converting a crafted AVI file to MPEG4, leading to an information disclosure or a denial of service.
CVSS metrics
3 scores · 2 sources · 2 versionsHigh 8.1Preferred score · NVD (NIST)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:HSourcesAll 2 agree
- OSV · UbuntuEcosystem advisory · calculated8.1HighCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H
Medium 5.8Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:N/A:PSourcesSingle source
EPSS trend
Probability
1.41%
Chance of exploitation in the next 30 days
Percentile
72%
Versus all other CVEs
30-day change
0.00 pp
From 1.41% on 18-09-2026
18-09-202618-10-2026
EPSS score1.41%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Ubuntu4 products
- chromium-browserAll versions (No fix recorded)
- gst-libav1.0All versions (No fix recorded)
- mythtvAll versions (No fix recorded)
- oxide-qtAll versions (No fix recorded)
Ffmpeg1 product
- ffmpegEOL4.0.1
2 vendors · 5 products