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CVE-2020-13904

MEDIUM
5.5
CVSS Score
Published: June 7, 2020 at 06:07 PM UTC
Updated: June 17, 2026 at 02:53 AM UTC
3 products affected across 3 vendorsDebian LinuxUbuntu LinuxFFMPEG

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Severity
MEDIUM5.5
Exploit prediction
EPSS 1%

Description

FFmpeg 2.8 and 4.2.3 has a use-after-free via a crafted EXTINF duration in an m3u8 file because parse_playlist in libavformat/hls.c frees a pointer, and later that pointer is accessed in av_probe_input_format3 in libavformat/format.c.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

References (7)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/FFmpeg/FFmpeg/commit/6959358683c7533f586c07a766acc5fe9544d8b2
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2020/07/msg00022.html
x_refsource_MISC
Source: [email protected]
https://patchwork.ffmpeg.org/project/ffmpeg/patch/20200529033905.41926-1-lq%40chinaffmpeg.org/
Vendor Advisoryx_refsource_GENTOOThird Party Advisory
Source: [email protected]
https://security.gentoo.org/glsa/202007-58
x_refsource_MISCExploitIssue TrackingVendor Advisory
Source: [email protected]
https://trac.ffmpeg.org/ticket/8673
Vendor Advisoryx_refsource_UBUNTUThird Party Advisory
Source: [email protected]
https://usn.ubuntu.com/4431-1/
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2020/dsa-4722

CVSS

5.5MEDIUM[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-416

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