CVE-2022-43680

Aliases:RHSA-2023:0103RHSA-2023:0337RHSA-2024:0421DEBIAN-CVE-2022-43680ALPINE-CVE-2022-43680CGA-7h63-c57m-2wx3CGA-fg3p-4f6x-xpq4
Advisory lineage Upstream: 0 Downstream: 25
Modified
Published: 24 Oct 2022, 00:00
Last modified:30 May 2025, 19:20

Vulnerability Summary

Overall Risk (default)
medium
40/100
CVSS Score
7.5 HIGH
v3.1 (cve.org)
EPSS Score
2.44% LOW
2% probability +2.09%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

24 Oct 2022, 00:00
Published
Vulnerability first disclosed
30 May 2025, 19:20
Last Modified
Vulnerability information updated

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.

CVSS Metrics

  • v3.1•HIGH•Score: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Trends

Current EPSS score: 2.44%• Percentile: 84%

Techniques & Countermeasures

  • CWE-416•Use After Free

    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 Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.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 Systems

  • alpine•expat

    < 2.2.10-r8 | < 2.5.0-r0 | < 2.5.0-r0 | < 2.5.0-r0 | < 2.5.0-r0 | < 2.5.0-r0 | < 2.5.0-r0 | < 2.5.0-r0 | < 2.5.0-r0 | < 2.5.0-r0 | < 2.5.0-r0 | < 2.5.0-r0

  • chainguard•expat

    < 0

  • wolfi•expat

    < 0

  • debian•expat

    < 2.2.10-2+deb11u5 | < 2.5.0-1 | < 2.5.0-1 | < 2.5.0-1

  • debian•libxmltok

    all | all

  • debian•debian_linux

    10.0 | 11.0

  • fedoraproject•fedora

    35 | 36 | 37

  • libexpat_project•libexpat

    ≤ 2.4.9

  • netapp•active_iq_unified_manager

    na

  • netapp•h300s_firmware

    na

  • netapp•h410c_firmware

    na

  • netapp•h410s_firmware

    na

  • netapp•h500s_firmware

    na

  • netapp•h700s_firmware

    na

  • netapp•hci_compute_node

    na

  • netapp•oncommand_workflow_automation

    na

  • netapp•solidfire_\&_hci_management_node

    na

  • redhat•expat

    < 0:2.2.5-10.el8_7.1 | < 0:2.4.9-1.el9_1.1 | < 0:2.2.5-8.el8_6.4

  • redhat•expat-debuginfo

    < 0:2.2.5-10.el8_7.1 | < 0:2.4.9-1.el9_1.1 | < 0:2.4.9-1.el9_1.1 | < 0:2.2.5-8.el8_6.4

  • redhat•expat-debugsource

    < 0:2.2.5-10.el8_7.1 | < 0:2.4.9-1.el9_1.1 | < 0:2.4.9-1.el9_1.1 | < 0:2.2.5-8.el8_6.4

  • redhat•expat-devel

    < 0:2.2.5-10.el8_7.1 | < 0:2.4.9-1.el9_1.1 | < 0:2.2.5-8.el8_6.4

References (29)