CVE-2020-26682

CVSS V2 Medium 6.8 CVSS V3 High 8.8

Description

In libass 0.14.0, the `ass_outline_construct`'s call to `outline_stroke` causes a signed integer overflow.

Overview

CVE ID
CVE-2020-26682

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2020-10-16T14:15:11

Last Modified Date
2022-06-15T03:12:52

Weakness Enumerations

CWE	URL
CWE-190	http://cwe.mitre.org/data/definitions/190.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:a:libass_project:libass:0.14.0:::::::*	1	OR

CVSS Version 2

Version
2.0

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

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
6.8

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
6.4

CVSS Version 3

Version
3.1

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

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
8.8

Base Severity
HIGH

Exploitability Score
2.8

Impact Score
5.9

References

Reference URL	Reference Tags
https://github.com/libass/libass/issues/431	Exploit Third Party Advisory
https://github.com/libass/libass/pull/432	Third Party Advisory
http://www.openwall.com/lists/oss-security/2020/11/19/7
https://security.gentoo.org/glsa/202012-12

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-26682
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-26682

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 07:29:24				Added to TrackCVE
2022-12-05 00:11:08	2020-10-16T14:15Z	2020-10-16T14:15:11	CVE Published Date	updated
2022-12-05 00:11:08		2022-06-15T03:12:52	CVE Modified Date	updated
2022-12-05 00:11:08		Analyzed	Vulnerability Status	updated