CVE-2022-43680
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: alma — https://errata.almalinux.org/9/ALSA-2023-0337.html
Vendor advisory: alma — https://errata.almalinux.org/8/ALSA-2023-0103.html
Vendor advisory: alma — https://bugzilla.redhat.com/2140059
Vendor advisory: alma — https://access.redhat.com/errata/RHSA-2023:0103
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2023:0337
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2022-43680.html
Vendor advisory: rocky — https://errata.rockylinux.org/RLSA-2023:0103
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2022-43680
Vendor advisory: redhat — https://access.redhat.com/errata/RHSA-2023:0337
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| rhel | 9 | fixed | |
| debian | bookworm | fixed | 2.5.0-1 |
| debian | bullseye | fixed | 2.2.10-2+deb11u5 |
| debian | forky | fixed | 2.5.0-1 |
| debian | sid | fixed | 2.5.0-1 |
| debian | trixie | fixed | 2.5.0-1 |
| rocky | 8 | fixed | |
| sles | affected | | |
| rocky | 9 | fixed | |
References
- https://access.redhat.com/errata/RHSA-2023:0337
- https://security-tracker.debian.org/tracker/CVE-2022-43680
- https://errata.rockylinux.org/RLSA-2023:0103
- https://www.suse.com/security/cve/CVE-2022-43680.html
- https://errata.rockylinux.org/RLSA-2023:0337
- https://access.redhat.com/errata/RHSA-2023:0103
- https://bugzilla.redhat.com/2140059
- https://errata.almalinux.org/8/ALSA-2023-0103.html
- https://errata.almalinux.org/9/ALSA-2023-0337.html
Verify integrity in audit chain (admin only). AS-IS.