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CVE-2022-43680

Public on 2022-10-24
Modified on 2024-02-07
Description

In libexpat through 2.4.9, there is a use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations.

Severity
Important
See what this means
CVSS v3 Base Score
7.5
See breakdown

Affected Packages

Platform Package Release Date Advisory
Amazon Linux 1 expat 2022-12-01 17:34 ALAS-2022-1655
Amazon Linux 2 - Core expat 2022-12-01 20:31 ALAS2-2022-1885
Amazon Linux 2023 expat 2023-02-17 20:45 ALAS2023-2023-058

CVSS Scores

Score Type Score Vector
Amazon Linux CVSSv3 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD CVSSv3 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H