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CVE-2019-9719

HIGH
8.8
CVSS Score
Published: September 19, 2019 at 08:32 PM UTC
Updated: June 17, 2026 at 02:44 AM UTC
1 product affected across 1 vendorLibav

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Severity
HIGH8.8
Exploit prediction
EPSS 2%

Description

A stack-based buffer overflow in the subtitle decoder in Libav 12.3 allows attackers to corrupt the stack via a crafted video file in Matroska format, because srt_to_ass in libavcodec/srtdec.c misuses snprintf. NOTE: Third parties dispute that this is a vulnerability because “no evidence of a vulnerability is provided” and only “a generic warning from a static code analysis” is provided

Affected

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

Libav· Libav
95%
v ≤ 12.3

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (4)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://github.com/libav/libav/blob/df744e3cf66548c9167ea857104a29d2ea92819e/libavcodec/srtdec.c#L113
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://github.com/libav/libav/commits/master/libavcodec/srtdec.c
x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
https://lgtm.com/projects/g/libav/libav/snapshot/f5f553ca3bdca0c97dd08bbf002f0d8cb193788b/files/libavcodec/srtdec.c?sort=name&dir=ASC&mode=heatmap#xeec693aa6d85853b:1
x_refsource_MISCThird Party Advisory
Source: [email protected]
https://lgtm.com/security/

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-787

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