CVE-2022-43680

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Summary

CVECVE-2022-43680
StatePUBLISHED
Assignermitre
Source PriorityCVE Program / NVD first with legacy fallback
Published2022-10-24 14:15:53 UTC
Updated2026-10-14 19:16:53 UTC
DescriptionIn 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.

Risk And Classification

Primary CVSS: v3.1 7.5 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS: 0.024570000 probability, percentile 0.841050000 (date 2026-10-14)

Problem Types: CWE-416 | n/a | CWE-416 CWE-416 Use After Free

VersionSourceTypeScoreSeverityVector
3.1[email protected]Primary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1ADPDECLARED7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary7.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Debian Debian Linux 10.0 All All All
Operating System Debian Debian Linux 11.0 All All All
Operating System Fedoraproject Fedora 35 All All All
Operating System Fedoraproject Fedora 36 All All All
Operating System Fedoraproject Fedora 37 All All All
Application Libexpat Project Libexpat All All All All
Application Netapp Active Iq Unified Manager - All All All
Hardware Netapp H300s - All All All
Operating System Netapp H300s Firmware - All All All
Hardware Netapp H410c - All All All
Operating System Netapp H410c Firmware - All All All
Hardware Netapp H410s - All All All
Operating System Netapp H410s Firmware - All All All
Hardware Netapp H500s - All All All
Operating System Netapp H500s Firmware - All All All
Hardware Netapp H700s - All All All
Operating System Netapp H700s Firmware - All All All
Hardware Netapp Hci Compute Node - All All All
Operating System Netapp Hci Compute Node Firmware - All All All
Application Netapp Oncommand Workflow Automation - All All All
Application Netapp Solidfire Hci Management Node - All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Na N/a affected n/a Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified
ADP Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP affected V3.1.0 V3.1.5 custom Not specified

References

ReferenceSourceLinkTags
cert-portal.siemens.com/productcert/html/ssa-398330.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
[SECURITY] Fedora 35 Update: mingw-expat-2.5.0-1.fc35 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List, Third Party Advisory
Debian -- Security Information -- DSA-5266-1 expat af854a3a-2127-422b-91ae-364da2661108 www.debian.org Third Party Advisory
[SECURITY] Fedora 36 Update: mingw-expat-2.5.0-1.fc36 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List, Third Party Advisory
[SECURITY] [DLA 3165-1] expat security update af854a3a-2127-422b-91ae-364da2661108 lists.debian.org Mailing List, Third Party Advisory
www.openwall.com/lists/oss-security/2023/12/28/5 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
Expat: Denial of Service (GLSA 202210-38) — Gentoo security af854a3a-2127-422b-91ae-364da2661108 security.gentoo.org Third Party Advisory
Bugfixes by c01db33f · Pull Request #616 · libexpat/libexpat · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Exploit, Issue Tracking, Patch, Third Party Advisory
[SECURITY] Fedora 36 Update: mingw-pixman-0.42.2-1.fc36 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List, Third Party Advisory
CVE-2022-43680 libexpat Vulnerability in NetApp Products | NetApp Product Security af854a3a-2127-422b-91ae-364da2661108 security.netapp.com Third Party Advisory
cert-portal.siemens.com/productcert/html/ssa-892048.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e cert-portal.siemens.com
[SECURITY] Fedora 35 Update: mingw-pixman-0.42.2-1.fc35 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List, Third Party Advisory
[CVE-2022-43680] XML_ParserFree may free parser->m_dtd memory in out-of-memory situations when it should not · Issue #649 · libexpat/libexpat · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Exploit, Issue Tracking, Patch, Third Party Advisory
[SECURITY] Fedora 37 Update: mingw-pixman-0.42.2-1.fc37 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List, Third Party Advisory
[SECURITY] Fedora 37 Update: mingw-expat-2.5.0-1.fc37 - package-announce - Fedora Mailing-Lists af854a3a-2127-422b-91ae-364da2661108 lists.fedoraproject.org Mailing List, Third Party Advisory
www.openwall.com/lists/oss-security/2024/01/03/5 af854a3a-2127-422b-91ae-364da2661108 www.openwall.com Mailing List, Third Party Advisory
[CVE-2022-43680] Fix overeager DTD destruction (fixes #649) by hartwork · Pull Request #650 · libexpat/libexpat · GitHub af854a3a-2127-422b-91ae-364da2661108 github.com Exploit, Issue Tracking, Patch, Third Party Advisory
[SECURITY] Fedora 36 Update: mingw-pixman-0.42.2-1.fc36 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 36 Update: mingw-expat-2.5.0-1.fc36 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 37 Update: mingw-expat-2.5.0-1.fc37 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 35 Update: mingw-pixman-0.42.2-1.fc35 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 35 Update: mingw-expat-2.5.0-1.fc35 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
[SECURITY] Fedora 37 Update: mingw-pixman-0.42.2-1.fc37 - package-announce - Fedora Mailing-Lists MITRE lists.fedoraproject.org
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Legacy QID Mappings

  • 160391 Oracle Enterprise Linux Security Update for expat (ELSA-2023-0103)
  • 160416 Oracle Enterprise Linux Security Update for expat (ELSA-2023-0337)
  • 181170 Debian Security Update for expat (DLA 3165-1)
  • 181180 Debian Security Update for expat (DSA 5266-1)
  • 184467 Debian Security Update for expat (CVE-2022-43680)
  • 199034 Ubuntu Security Notification for Expat Vulnerabilities (USN-5638-2)
  • 199042 Ubuntu Security Notification for Expat Vulnerability (USN-5638-3)
  • 199586 Ubuntu Security Notification for Expat Vulnerabilities (USN-5638-4)
  • 20320 IBM DB2 Multiple Vulnerabilities (6847293)
  • 20354 Oracle Database 19c Critical Patch Update - July 2023
  • 20355 Oracle Database 21c Critical Patch Update - July 2023
  • 20356 Oracle Database 19c Critical OJVM Patch Update - July 2023
  • 241059 Red Hat Update for expat (RHSA-2023:0103)
  • 241098 Red Hat Update for expat (RHSA-2023:0337)
  • 242758 Red Hat Update for expat (RHSA-2024:0421)
  • 283309 Fedora Security Update for mingw (FEDORA-2022-49db80f821)
  • 283310 Fedora Security Update for mingw (FEDORA-2022-c43235716e)
  • 283311 Fedora Security Update for mingw (FEDORA-2022-3cf0e7ebc7)
  • 283312 Fedora Security Update for mingw (FEDORA-2022-ae2559a8f4)
  • 283436 Fedora Security Update for mingw (FEDORA-2022-5f1e2e9016)
  • 283437 Fedora Security Update for mingw (FEDORA-2022-f3a939e960)
  • 330126 IBM AIX Denial of Service (DoS) due to Python (python_advisory3)
  • 354129 Amazon Linux Security Advisory for expat : ALAS2-2022-1885
  • 354260 Amazon Linux Security Advisory for expat : ALAS-2022-1655
  • 354507 Amazon Linux Security Advisory for expat : ALAS2022-2022-261
  • 354533 Amazon Linux Security Advisory for expat : ALAS-2022-261
  • 355053 Amazon Linux Security Advisory for expat : AL2012-2022-377
  • 355281 Amazon Linux Security Advisory for expat : ALAS2023-2023-058
  • 377955 Alibaba Cloud Linux Security Update for expat (ALINUX3-SA-2023:0012)
  • 378374 IBM Hypertext Transfer Protocol (HTTP) Server Denial of Service (DoS) Vulnerabilty (6839161)
  • 378599 Splunk Enterprise Third Party Package Updates for June (SVD-2023-0613)
  • 378677 Oracle Hypertext Transfer Protocol Server (HTTP Server) Server Multiple Vulnerabilities (CPUJUL2023)
  • 502571 Alpine Linux Security Update for expat
  • 502572 Alpine Linux Security Update for expat
  • 503918 Alpine Linux Security Update for expat
  • 610466 Google Android Devices February 2023 Security Patch Missing
  • 610467 Google Android February 2023 Security Patch Missing for Samsung
  • 610473 Google Android March 2023 Security Patch Missing for Huawei EMUI
  • 6140074 AWS Bottlerocket Security Update for libexpat (GHSA-fwxw-x96j-mxgm)
  • 672475 EulerOS Security Update for expat (EulerOS-SA-2023-1008)
  • 672520 EulerOS Security Update for expat (EulerOS-SA-2023-1033)
  • 672566 EulerOS Security Update for expat (EulerOS-SA-2023-1122)
  • 672569 EulerOS Security Update for expat (EulerOS-SA-2023-1098)
  • 672596 EulerOS Security Update for expat (EulerOS-SA-2023-1311)
  • 672660 EulerOS Security Update for expat (EulerOS-SA-2023-1355)
  • 672663 EulerOS Security Update for expat (EulerOS-SA-2023-1383)
  • 710677 Gentoo Linux Expat Denial of Service Vulnerability (GLSA 202210-38)
  • 752762 SUSE Enterprise Linux Security Update for expat (SUSE-SU-2022:3874-1)
  • 752766 SUSE Enterprise Linux Security Update for expat (SUSE-SU-2022:3884-1)
  • 752775 SUSE Enterprise Linux Security Update for expat (SUSE-SU-2022:3912-1)
  • 904340 Common Base Linux Mariner (CBL-Mariner) Security Update for expat (11329)
  • 904347 Common Base Linux Mariner (CBL-Mariner) Security Update for expat (11316)
  • 904370 Common Base Linux Mariner (CBL-Mariner) Security Update for expat (11329-1)
  • 904419 Common Base Linux Mariner (CBL-Mariner) Security Update for expat (11316-1)
  • 940880 AlmaLinux Security Update for expat (ALSA-2023:0103)
  • 940896 AlmaLinux Security Update for expat (ALSA-2023:0337)
  • 960520 Rocky Linux Security Update for expat (RLSA-2023:0337)
  • 960621 Rocky Linux Security Update for expat (RLSA-2023:0103)

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