Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2022-43680

Use After Free

Published: Oct 24, 2022 | Modified: May 30, 2025
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
RedHat/V2
RedHat/V3
7.5 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ubuntu
MEDIUM
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Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2022-43680
CWEhttps://cwe.mitre.org/data/definitions/416.html

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.

Weakness

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory “belongs” to the code that operates on the new pointer.

Affected Software

NameVendorStart VersionEnd Version
LibexpatLibexpat_project*2.4.9 (including)
JBCS httpd 2.4.51.sp2RedHatexpat*
Red Hat Enterprise Linux 8RedHatfirefox-0:102.5.0-1.el8_7*
Red Hat Enterprise Linux 8RedHatexpat-0:2.2.5-10.el8_7.1*
Red Hat Enterprise Linux 8.1 Update Services for SAP SolutionsRedHatfirefox-0:102.5.0-1.el8_1*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatfirefox-0:102.5.0-1.el8_2*
Red Hat Enterprise Linux 8.2 Advanced Update SupportRedHatexpat-0:2.2.10-1.el8_2*
Red Hat Enterprise Linux 8.2 Telecommunications Update ServiceRedHatfirefox-0:102.5.0-1.el8_2*
Red Hat Enterprise Linux 8.2 Update Services for SAP SolutionsRedHatfirefox-0:102.5.0-1.el8_2*
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportRedHatexpat-0:2.2.10-1.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update SupportRedHatfirefox-0:102.5.0-1.el8_4*
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-OnRedHatexpat-0:2.2.10-1.el8_4*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatfirefox-0:102.5.0-1.el8_6*
Red Hat Enterprise Linux 8.6 Extended Update SupportRedHatexpat-0:2.2.5-8.el8_6.4*
Red Hat Enterprise Linux 9RedHatexpat-0:2.4.9-1.el9_1.1*
Red Hat Enterprise Linux 9RedHatexpat-0:2.4.9-1.el9_1.1*
Apache2Ubuntutrusty*
Apr-utilUbuntutrusty*
AyttmUbuntutrusty*
AyttmUbuntuxenial*
CableswigUbuntutrusty*
CableswigUbuntuxenial*
CadaverUbuntubionic*
CadaverUbuntufocal*
CadaverUbuntukinetic*
CadaverUbuntulunar*
CadaverUbuntumantic*
CadaverUbuntuoracular*
CadaverUbuntuplucky*
CadaverUbuntutrusty*
CadaverUbuntuxenial*
CmakeUbuntutrusty*
Coin3Ubuntubionic*
Coin3Ubuntutrusty*
Coin3Ubuntutrusty/esm*
Coin3Ubuntuxenial*
ExpatUbuntubionic*
ExpatUbuntudevel*
ExpatUbuntuesm-infra-legacy/trusty*
ExpatUbuntuesm-infra/bionic*
ExpatUbuntuesm-infra/focal*
ExpatUbuntuesm-infra/xenial*
ExpatUbuntufocal*
ExpatUbuntujammy*
ExpatUbuntukinetic*
ExpatUbuntulunar*
ExpatUbuntumantic*
ExpatUbuntunoble*
ExpatUbuntuoracular*
ExpatUbuntuplucky*
ExpatUbuntuquesting*
ExpatUbuntutrusty*
ExpatUbuntutrusty/esm*
ExpatUbuntuxenial*
FirefoxUbuntubionic*
FirefoxUbuntufocal*
FirefoxUbuntutrusty*
FirefoxUbuntuxenial*
GdcmUbuntutrusty*
GhostscriptUbuntutrusty*
InsighttoolkitUbuntutrusty*
InsighttoolkitUbuntuxenial*
Insighttoolkit4Ubuntutrusty*
Insighttoolkit4Ubuntuxenial*
LibxmltokUbuntubionic*
LibxmltokUbuntukinetic*
LibxmltokUbuntulunar*
LibxmltokUbuntumantic*
LibxmltokUbuntutrusty*
LibxmltokUbuntuupstream*
LibxmltokUbuntuxenial*
MatanzaUbuntubionic*
MatanzaUbuntudevel*
MatanzaUbuntuesm-apps/bionic*
MatanzaUbuntuesm-apps/focal*
MatanzaUbuntuesm-apps/jammy*
MatanzaUbuntuesm-apps/noble*
MatanzaUbuntuesm-apps/xenial*
MatanzaUbuntufocal*
MatanzaUbuntujammy*
MatanzaUbuntukinetic*
MatanzaUbuntulunar*
MatanzaUbuntumantic*
MatanzaUbuntunoble*
MatanzaUbuntuoracular*
MatanzaUbuntuplucky*
MatanzaUbuntuquesting*
MatanzaUbuntutrusty*
MatanzaUbuntuxenial*
SmartUbuntutrusty*
Swish-eUbuntubionic*
Swish-eUbuntufocal*
Swish-eUbuntukinetic*
Swish-eUbuntulunar*
Swish-eUbuntumantic*
Swish-eUbuntuoracular*
Swish-eUbuntuplucky*
Swish-eUbuntutrusty*
Swish-eUbuntuxenial*
TdomUbuntubionic*
TdomUbuntufocal*
TdomUbuntukinetic*
TdomUbuntulunar*
TdomUbuntumantic*
TdomUbuntuoracular*
TdomUbuntuplucky*
TdomUbuntutrusty*
TdomUbuntuxenial*
Texlive-binUbuntutrusty*
ThunderbirdUbuntubionic*
ThunderbirdUbuntudevel*
ThunderbirdUbuntufocal*
ThunderbirdUbuntujammy*
ThunderbirdUbuntukinetic*
ThunderbirdUbuntulunar*
ThunderbirdUbuntumantic*
ThunderbirdUbuntunoble*
ThunderbirdUbuntuoracular*
ThunderbirdUbuntuplucky*
ThunderbirdUbuntuquesting*
ThunderbirdUbuntutrusty*
ThunderbirdUbuntuxenial*
Vnc4Ubuntubionic*
Vnc4Ubuntutrusty*
Vnc4Ubuntutrusty/esm*
Vnc4Ubuntuxenial*
VtkUbuntutrusty*
VtkUbuntutrusty/esm*
VtkUbuntuxenial*
Wbxml2Ubuntubionic*
Wbxml2Ubuntufocal*
Wbxml2Ubuntukinetic*
Wbxml2Ubuntulunar*
Wbxml2Ubuntumantic*
Wbxml2Ubuntuoracular*
Wbxml2Ubuntuplucky*
Wbxml2Ubuntutrusty*
Wbxml2Ubuntuxenial*
Xmlrpc-cUbuntubionic*
Xmlrpc-cUbuntufocal*
Xmlrpc-cUbuntukinetic*
Xmlrpc-cUbuntulunar*
Xmlrpc-cUbuntumantic*
Xmlrpc-cUbuntuoracular*
Xmlrpc-cUbuntuplucky*
Xmlrpc-cUbuntutrusty*
Xmlrpc-cUbuntutrusty/esm*
Xmlrpc-cUbuntuxenial*

Potential Mitigations

References

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