CVE-2019-9720

CVSS V2 High 7.1 CVSS V3 Medium 6.5

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.

Overview

CVE ID
CVE-2019-9720

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2019-09-19T21:15:10

Last Modified Date
2021-07-21T11:39:23

Weakness Enumerations

CWE	URL
CWE-787	http://cwe.mitre.org/data/definitions/787.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:libav:libav::::::::	1	OR		12.3

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:N/C:N/I:N/A:C

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
NONE

Integrity Impact
NONE

Availability Impact
COMPLETE

Base Score
7.1

Severity
HIGH

Exploitability Score
8.6

Impact Score
6.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
UNCHANGED

Confidentiality Impact
NONE

Availability Impact
HIGH

Base Score
6.5

Base Severity
MEDIUM

Exploitability Score
2.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://github.com/libav/libav/blob/df744e3cf66548c9167ea857104a29d2ea92819e/libavcodec/srtdec.c#L161	Exploit Third Party Advisory
https://lgtm.com/security/	Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2019-9720
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-9720

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:00:06				Added to TrackCVE
2022-12-04 02:57:15	2019-09-19T21:15Z	2019-09-19T21:15:10	CVE Published Date	updated
2022-12-04 02:57:15		2021-07-21T11:39:23	CVE Modified Date	updated
2022-12-04 02:57:15		Analyzed	Vulnerability Status	updated