CVE-2022-43680

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.

Published: Oct 24, 2022
Updated: Apr 14, 2023
CVE: CVE-2022-43680
Severity: High
Exploit:

CVSS v3:

Severity: High
Score: 7.5
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CWEs:

CWE-416

Affected Software
References

Software	From	Fixed in
libexpat_project / libexpat	-	2.4.9.x
debian / debian_linux	10.0	10.0.x
debian / debian_linux	11.0	11.0.x
fedoraproject / fedora	35	35.x
fedoraproject / fedora	36	36.x
fedoraproject / fedora	37	37.x

http://www.openwall.com/lists/oss-security/2023/12/28/5
http://www.openwall.com/lists/oss-security/2024/01/03/5
https://github.com/libexpat/libexpat/issues/649
https://github.com/libexpat/libexpat/pull/616
https://github.com/libexpat/libexpat/pull/650
https://lists.debian.org/debian-lts-announce/2022/10/msg00033.html
https://lists.fedoraproject.org/archives/list/[email protected]/message/AJ5VY2VYXE4WTRGQ6LMGLF6FV3SY37YE/
https://lists.fedoraproject.org/archives/list/[email protected]/message/BY4OPSIB33ETNUXZY2UPZ4NGQ3OKDY4D/
https://lists.fedoraproject.org/archives/list/[email protected]/message/DPQVIF6TOJNY2T3ZZETFKR4G34FFREBQ/
https://lists.fedoraproject.org/archives/list/[email protected]/message/FFCOMBSOJKLIKCGCJWHLJXO4EVYBG7AR/
https://lists.fedoraproject.org/archives/list/[email protected]/message/IUJ2BULJTZ2BMSKQHB6US674P55UCWWS/
https://lists.fedoraproject.org/archives/list/[email protected]/message/XG5XOOB7CD55CEE6OJYKSACSIMQ4RWQ6/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJ5VY2VYXE4WTRGQ6LMGLF6FV3SY37YE/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY4OPSIB33ETNUXZY2UPZ4NGQ3OKDY4D/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DPQVIF6TOJNY2T3ZZETFKR4G34FFREBQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFCOMBSOJKLIKCGCJWHLJXO4EVYBG7AR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IUJ2BULJTZ2BMSKQHB6US674P55UCWWS/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XG5XOOB7CD55CEE6OJYKSACSIMQ4RWQ6/
https://security.gentoo.org/glsa/202210-38
https://security.netapp.com/advisory/ntap-20221118-0007/
https://www.debian.org/security/2022/dsa-5266

Vulnerability Database

289,689

CVE-2022-43680