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.

Score

CVSS 3.1 7.5 High

Status

Modified - cve@mitre.org

Published

2022-10-24

Last modified

2026-10-14

Weaknesses

CWE-416

Affected products

• Debian Linux (Debian)
• Fedora (Fedoraproject)
• Libexpat (Libexpat Project)
• Active Iq Unified Manager (Netapp)
• H300s Firmware (Netapp)
• H410c Firmware (Netapp)
• H410s Firmware (Netapp)
• H500s Firmware (Netapp)
• H700s Firmware (Netapp)
• Hci Compute Node Firmware (Netapp)
• Oncommand Workflow Automation (Netapp)
• Solidfire & Hci Management Node (Netapp)
• Simatic S7-1500 Cpu 1518-4 Pndp Mfp (Siemens)
• Simatic S7-1500 Cpu 1518f-4 Pndp Mfp (Siemens)
• Siplus S7-1500 Cpu 1518-4 Pndp Mfp (Siemens)

References

• https://github.com/libexpat/libexpat/pull/650
• https://github.com/libexpat/libexpat/issues/649
• https://github.com/libexpat/libexpat/pull/616
• 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/package-announce%40lists.fedoraproject.org/message/BY4OPSIB33ETNUXZY2UPZ4…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJ5VY2VYXE4WTRGQ6LMGLF…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IUJ2BULJTZ2BMSKQHB6US6…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XG5XOOB7CD55CEE6OJYKSA…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DPQVIF6TOJNY2T3ZZETFKR…
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFCOMBSOJKLIKCGCJWHLJX…
• https://security.netapp.com/advisory/ntap-20221118-0007/
• http://www.openwall.com/lists/oss-security/2023/12/28/5
• http://www.openwall.com/lists/oss-security/2024/01/03/5
• https://cert-portal.siemens.com/productcert/html/ssa-892048.html
• https://cert-portal.siemens.com/productcert/html/ssa-398330.html