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CVE-2022-43680

Status Candidate

Overview

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.

Related Files

Ubuntu Security Notice USN-5638-3
Posted Nov 24, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5638-3 - USN-5638-1 fixed a vulnerability in Expat. This update provides the corresponding updates for Ubuntu 16.04 ESM, Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, Ubuntu 22.04 LTS and Ubuntu 22.10. This update also fixes a minor regression introduced in Ubuntu 18.04 LTS.

tags | advisory
systems | linux, ubuntu
advisories | CVE-2022-43680
SHA-256 | 2532563008e029e5ba0c79ed2b95123070ba281491fe1c60cfa1f24a3d4a0ee8
Gentoo Linux Security Advisory 202210-38
Posted Nov 1, 2022
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202210-38 - A vulnerability has been found in Expat which could result in denial of service. Versions less than 2.5.0 are affected.

tags | advisory, denial of service
systems | linux, gentoo
advisories | CVE-2022-43680
SHA-256 | 148a459d1873a4978eb1ea1f4339444a55cc9512a48cd671db16503252f74090
Debian Security Advisory 5266-1
Posted Oct 31, 2022
Authored by Debian | Site debian.org

Debian Linux Security Advisory 5266-1 - A heap use-after-free vulnerability after overeager destruction of a shared DTD in the XML_ExternalEntityParserCreate function in Expat, an XML parsing C library, may result in denial of service or potentially the execution of arbitrary code.

tags | advisory, denial of service, arbitrary
systems | linux, debian
advisories | CVE-2022-43680
SHA-256 | 322101dc26693e978fb7c1c772e4722e79ec519d4a8ef492d7c487c1a72f29af
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