PT-2018-11728 · FFmpeg+2 · Ffmpeg+2

Alexandru Razvan Caciulescu + 3 · Published 2018-07-05 · Updated 2026-02-06 · CVE-2018-13305

Positive Technologies (AI Summary)

CVSS v3.1

8.1

High

Base vector

AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H

Name of the Vulnerable Software and Affected Versions FFmpeg version 4.0.1

Description The issue arises from a missing check for negative values of the mquant variable in the vc1 put blocks clamped function, located in libavcodec/vc1 block.c. This can lead to an out-of-array access when converting a crafted AVI file to MPEG4, potentially resulting in information disclosure or a denial of service.

Recommendations For FFmpeg version 4.0.1, consider applying a patch that adds a check for negative mquant values in the vc1 put blocks clamped function to prevent out-of-array access. As a temporary workaround, avoid converting crafted AVI files to MPEG4 until a patch is available.

Fix

DoS

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

ALT-PU-2018-2047

CLEANSTART-2026-EZ98723

CLEANSTART-2026-PS82605

CLEANSTART-2026-XE32069

CVE-2018-13305

OPENSUSE-SU-2020:0024-1

OPENSUSE-SU-2020_0024-1

OPENSUSE-SU-2024:10754-1

SUSE-SU-2018:3609-1

Affected Products

Alt Linux

Ffmpeg

Suse

References · 192

• https://github.com/FFmpeg/FFmpeg/commit/d08d4a8c7387e758d439b0592782e4cfa2b4d6a4 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2018-7751 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-1000016 · Security Note
• https://cve.org/CVERecord?id=CVE-2018-13305 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-9718 · Security Note
• https://ubuntu.com/security/CVE-2018-13305 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2018-12458 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-1999010 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-13305 · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2020:0024-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-13904 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-13302 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-35965 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2020-12284 · Security Note
• http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.html · Vendor Advisory