What is CVE-2018-13305?

CVE-2018-13305 is a high-severity vulnerability in Ffmpeg, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2018-07-05.

How severe is CVE-2018-13305?

High severity. CVSS v3 base score is 8.1 out of 10.

Is CVE-2018-13305 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Out-of-bounds Read in Ffmpeg

CVE-2018-13305

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.

Vulnerability class: Buffer Overflow

EPSS: 0.014 (69.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H.

Affected products

Ffmpeg — versions 4.0.1
N/a — versions n/a

Weakness classification (CWE)

CWE-125 — Out-of-bounds Read

Public proof-of-concept exploits

References

cve@mitre.org (Patch, x_refsource_MISC)
cve@mitre.org (vendor-advisory, x_refsource_SUSE)

Frequently asked questions

What is CVE-2018-13305?: CVE-2018-13305 is a high-severity vulnerability in Ffmpeg, classified under Out-of-bounds Read. CVSS score: 8.1/10. Published 2018-07-05.
How severe is CVE-2018-13305?: High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2018-13305 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.