CVE-2022-43680

Public 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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.24%
Vendor Advisory debian.org Vendor Advisory gentoo.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/libexpat/libexpat/pull/650 patch exploit third party advisory issue tracking
https://github.com/libexpat/libexpat/issues/649 patch exploit third party advisory issue tracking
https://github.com/libexpat/libexpat/pull/616 patch exploit third party advisory issue tracking
https://lists.debian.org/debian-lts-announce/2022/10/msg00033.html third party advisory mailing list
https://www.debian.org/security/2022/dsa-5266 third party advisory vendor advisory
https://security.gentoo.org/glsa/202210-38 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BY4OPSIB33ETNUXZY2UPZ4NGQ3OKDY4D/ vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AJ5VY2VYXE4WTRGQ6LMGLF6FV3SY37YE/ vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/IUJ2BULJTZ2BMSKQHB6US674P55UCWWS/ vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XG5XOOB7CD55CEE6OJYKSACSIMQ4RWQ6/ vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/DPQVIF6TOJNY2T3ZZETFKR4G34FFREBQ/ vendor advisory mailing list third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FFCOMBSOJKLIKCGCJWHLJXO4EVYBG7AR/ vendor advisory mailing list third party advisory
https://security.netapp.com/advisory/ntap-20221118-0007/ third party advisory
http://www.openwall.com/lists/oss-security/2023/12/28/5 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2024/01/03/5 third party advisory mailing list

Frequently Asked Questions

What is the severity of CVE-2022-43680?
CVE-2022-43680 has been scored as a high severity vulnerability.
How to fix CVE-2022-43680?
To fix CVE-2022-43680, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-43680 being actively exploited in the wild?
It is possible that CVE-2022-43680 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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