CVE-2022-43680

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.

References

https://github.com/libexpat/libexpat/pull/650

https://github.com/libexpat/libexpat/pull/616

https://github.com/libexpat/libexpat/issues/649

https://lists.debian.org/debian-lts-announce/2022/10/msg00033.html

https://www.debian.org/security/2022/dsa-5266

https://security.gentoo.org/glsa/202210-38

https://lists.fedoraproject.org/archives/list/[email protected]/message/BY4OPSIB33ETNUXZY2UPZ4NGQ3OKDY4D/

https://lists.fedoraproject.org/archives/list/[email protected]/message/IUJ2BULJTZ2BMSKQHB6US674P55UCWWS/

https://lists.fedoraproject.org/archives/list/[email protected]/message/AJ5VY2VYXE4WTRGQ6LMGLF6FV3SY37YE/

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/XG5XOOB7CD55CEE6OJYKSACSIMQ4RWQ6/

https://security.netapp.com/advisory/ntap-20221118-0007/

Details