CVE-2020-36430

libass 0.15.x before 0.15.1 has a heap-based buffer overflow in decode_chars (called from decode_font and process_text) because the wrong integer data type is used for subtraction.

CVSS v3.0 7.8 HIGH
CVSS v2.0 6.8 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/libass/libass/commit/017137471d0043e0321e377ed8da48e45a3ec632	Patch Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/libass/OSV-2020-2099.yaml	Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26674	Issue Tracking Patch Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6JUXFQUJ32GWG5E46A63DFDCYJAF3VU6/	Mailing List Third Party Advisory
https://security.gentoo.org/glsa/202208-13	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:libass_project:libass:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

Information

Published : 2021-07-20 00:15

Updated : 2022-12-09 10:35

NVD link : CVE-2020-36430

Mitre link : CVE-2020-36430

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

libass_project

libass

fedoraproject

fedora

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