CVE-2022-43680
HIGH
7.5
CVSS Score
Published: October 24, 2022 at 12:00 AM UTC
Updated: October 14, 2026 at 07:16 PM UTC
12 products affected across 4 vendorsDebian LinuxFedoraActive IQ Unified Manager· also runs on 6 platforms
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Severity
HIGH7.5
Exploit prediction
EPSS 3%
SSVC
No known exploit
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
- https://github.com/libexpat/libexpat/issues/649
- https://github.com/libexpat/libexpat/pull/616
- https://github.com/libexpat/libexpat/pull/650
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJ5VY2VYXE4WTRGQ6LMGLF6FV3SY37YE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY4OPSIB33ETNUXZY2UPZ4NGQ3OKDY4D/
References (17)
Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2023/12/28/5Mailing ListThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2024/01/03/5ExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/libexpat/libexpat/issues/649ExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/libexpat/libexpat/pull/616ExploitIssue TrackingPatchThird Party Advisory
Source: [email protected]
https://github.com/libexpat/libexpat/pull/650Mailing ListThird Party Advisory
Source: [email protected]
https://lists.debian.org/debian-lts-announce/2022/10/msg00033.htmlVendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJ5VY2VYXE4WTRGQ6LMGLF6FV3SY37YE/Vendor AdvisoryMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY4OPSIB33ETNUXZY2UPZ4NGQ3OKDY4D/SSVC — Action Prioritization
SSVCNo known exploitAutomatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
7.5HIGHCISA-ADP
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-416
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