Bug 2140059 (CVE-2022-43680) - CVE-2022-43680 expat: use-after free caused by overeager destruction of a shared DTD in XML_ExternalEntityParserCreate
Summary: CVE-2022-43680 expat: use-after free caused by overeager destruction of a sha...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2022-43680
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2140060 2140061 2140062 2140063 2140064 2140065 2140678 2140679 2140680 2140681 2140682 2140683 2140684 2140685 2140686 2140687 2140688 2140689 2140690 2141014 2141015 2141016 2141017
Blocks: 2137402 2169449
TreeView+ depends on / blocked
 
Reported: 2022-11-04 10:19 UTC by Sandipan Roy
Modified: 2024-01-24 16:48 UTC (History)
17 users (show)

Fixed In Version: expat 2.5.0
Doc Type: If docs needed, set a value
Doc Text:
A use-after-free flaw was found in the Expat package, caused by destruction of a shared DTD in XML_ExternalEntityParserCreate in out-of-memory situations. This may lead to availability disruptions.
Clone Of:
Environment:
Last Closed: 2023-03-17 16:27:38 UTC
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2023:0103 0 None None None 2023-01-12 09:20:13 UTC
Red Hat Product Errata RHSA-2023:0337 0 None None None 2023-01-23 15:21:51 UTC
Red Hat Product Errata RHSA-2023:3355 0 None None None 2023-06-05 11:47:01 UTC
Red Hat Product Errata RHSA-2024:0421 0 None None None 2024-01-24 16:48:10 UTC

Description Sandipan Roy 2022-11-04 10:19:45 UTC 
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.

https://github.com/libexpat/libexpat/pull/650
https://github.com/libexpat/libexpat/pull/616
https://github.com/libexpat/libexpat/issues/649
https://lists.debian.org/debian-lts-announce/2022/10/msg00033.html
https://www.debian.org/security/2022/dsa-5266
https://security.gentoo.org/glsa/202210-38
Comment 1 Sandipan Roy 2022-11-04 10:24:43 UTC 
Created expat tracking bugs for this issue:

Affects: fedora-35 [bug 2140060]
Affects: fedora-36 [bug 2140063]


Created mingw-expat tracking bugs for this issue:

Affects: fedora-35 [bug 2140061]
Affects: fedora-36 [bug 2140064]


Created xmlrpc-c tracking bugs for this issue:

Affects: fedora-35 [bug 2140062]
Affects: fedora-36 [bug 2140065]
Comment 4 errata-xmlrpc 2023-01-12 09:20:11 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2023:0103 https://access.redhat.com/errata/RHSA-2023:0103
Comment 5 errata-xmlrpc 2023-01-23 15:21:48 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 9

Via RHSA-2023:0337 https://access.redhat.com/errata/RHSA-2023:0337
Comment 6 Product Security DevOps Team 2023-03-17 16:27:34 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2022-43680
Comment 7 errata-xmlrpc 2023-06-05 11:46:58 UTC 
This issue has been addressed in the following products:

  JBCS httpd 2.4.51.sp2

Via RHSA-2023:3355 https://access.redhat.com/errata/RHSA-2023:3355
Comment 9 errata-xmlrpc 2024-01-24 16:48:08 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8.6 Extended Update Support

Via RHSA-2024:0421 https://access.redhat.com/errata/RHSA-2024:0421
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