Bug 2044455 (CVE-2021-46143) - CVE-2021-46143 expat: Integer overflow in doProlog in xmlparse.c
Summary: CVE-2021-46143 expat: Integer overflow in doProlog in xmlparse.c
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-46143
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: 2053208 2044456 2052244 2052245 2052246 2052247 2052248 2052249 2052250 2058557 2058558 2058559 2058560 2058561 2058562 2060192 2060197 2060199 2060203 2060208 2060210
Blocks: 2044492
TreeView+ depends on / blocked
 
Reported: 2022-01-24 16:27 UTC by Pedro Sampaio
Modified: 2023-05-16 16:16 UTC (History)
35 users (show)

Fixed In Version: expat 2.4.3
Doc Type: If docs needed, set a value
Doc Text:
expat (libexpat) is susceptible to a software flaw that causes process interruption. When processing a large number of prefixed XML attributes on a single tag can libexpat can terminate unexpectedly due to integer overflow. The highest threat from this vulnerability is to availability, confidentiality and integrity.
Clone Of:
Environment:
Last Closed: 2022-05-05 01:16:20 UTC
Embargoed:

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Red Hat Product Errata RHBA-2022:0953 0 None None None 2022-03-16 21:53:11 UTC
Red Hat Product Errata RHBA-2022:0957 0 None None None 2022-03-17 15:57:58 UTC
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Red Hat Product Errata RHBA-2022:0960 0 None None None 2022-03-17 17:33:54 UTC
Red Hat Product Errata RHBA-2022:0964 0 None None None 2022-03-17 21:26:40 UTC
Red Hat Product Errata RHBA-2022:0965 0 None None None 2022-03-17 21:56:28 UTC
Red Hat Product Errata RHBA-2022:0976 0 None None None 2022-03-21 11:34:59 UTC
Red Hat Product Errata RHBA-2022:0977 0 None None None 2022-03-21 11:36:05 UTC
Red Hat Product Errata RHBA-2022:0978 0 None None None 2022-03-21 11:36:33 UTC
Red Hat Product Errata RHBA-2022:0979 0 None None None 2022-03-21 14:36:45 UTC
Red Hat Product Errata RHBA-2022:0980 0 None None None 2022-03-21 14:44:28 UTC
Red Hat Product Errata RHBA-2022:0981 0 None None None 2022-03-21 14:41:59 UTC
Red Hat Product Errata RHBA-2022:1005 0 None None None 2022-03-22 08:41:21 UTC
Red Hat Product Errata RHBA-2022:1014 0 None None None 2022-03-22 17:10:35 UTC
Red Hat Product Errata RHBA-2022:1031 0 None None None 2022-03-23 11:12:45 UTC
Red Hat Product Errata RHBA-2022:1046 0 None None None 2022-03-24 09:35:25 UTC
Red Hat Product Errata RHBA-2022:1048 0 None None None 2022-03-24 10:42:44 UTC
Red Hat Product Errata RHBA-2022:1057 0 None None None 2022-03-24 16:13:09 UTC
Red Hat Product Errata RHBA-2022:1058 0 None None None 2022-03-24 15:32:12 UTC
Red Hat Product Errata RHBA-2022:1079 0 None None None 2022-03-28 11:31:57 UTC
Red Hat Product Errata RHBA-2022:1085 0 None None None 2022-03-28 18:10:30 UTC
Red Hat Product Errata RHBA-2022:1089 0 None None None 2022-03-29 01:11:33 UTC
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Red Hat Product Errata RHBA-2022:1608 0 None None None 2022-04-27 07:56:27 UTC
Red Hat Product Errata RHBA-2022:1609 0 None Waiting on Red Hat Failure of hosts to PXEBoot from our Satellite 6.8 server. DHCP/TFTP appear to be working from packet captures but nothi... 2022-06-23 16:13:49 UTC
Red Hat Product Errata RHBA-2022:1610 0 None None None 2022-04-27 07:17:41 UTC
Red Hat Product Errata RHBA-2022:1611 0 None None None 2022-04-27 07:18:52 UTC
Red Hat Product Errata RHBA-2022:1612 0 None None None 2022-04-27 07:20:31 UTC
Red Hat Product Errata RHBA-2022:1613 0 None None None 2022-04-27 07:21:19 UTC
Red Hat Product Errata RHBA-2022:1614 0 None None None 2022-04-27 07:23:06 UTC
Red Hat Product Errata RHBA-2022:1615 0 None None None 2022-04-27 07:23:40 UTC
Red Hat Product Errata RHBA-2022:1616 0 None None None 2022-04-27 07:27:08 UTC
Red Hat Product Errata RHSA-2022:0951 0 None None None 2022-03-16 16:16:33 UTC
Red Hat Product Errata RHSA-2022:1069 0 None None None 2022-03-28 11:49:18 UTC
Red Hat Product Errata RHSA-2022:7143 0 None None None 2022-10-26 20:20:52 UTC
Red Hat Product Errata RHSA-2022:7144 0 None None None 2022-10-26 20:07:28 UTC
Red Hat Product Errata RHSA-2022:7692 0 None None None 2022-11-08 10:11:11 UTC

Description Pedro Sampaio 2022-01-24 16:27:57 UTC 
In doProlog in xmlparse.c in Expat (aka libexpat) before 2.4.3, an integer overflow exists for m_groupSize. 

References:

https://github.com/libexpat/libexpat/issues/532
https://github.com/libexpat/libexpat/pull/538
http://www.openwall.com/lists/oss-security/2022/01/17/3
Comment 1 Pedro Sampaio 2022-01-24 16:28:16 UTC 
Created expat tracking bugs for this issue:

Affects: fedora-all [bug 2044456]
Comment 8 errata-xmlrpc 2022-03-16 16:16:30 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:0951 https://access.redhat.com/errata/RHSA-2022:0951
Comment 9 errata-xmlrpc 2022-03-28 11:49:14 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2022:1069 https://access.redhat.com/errata/RHSA-2022:1069
Comment 10 Product Security DevOps Team 2022-05-05 01:16:17 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-2021-46143
Comment 11 errata-xmlrpc 2022-10-26 20:07:24 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Core Services

Via RHSA-2022:7144 https://access.redhat.com/errata/RHSA-2022:7144
Comment 12 errata-xmlrpc 2022-10-26 20:20:48 UTC 
This issue has been addressed in the following products:

  JBoss Core Services on RHEL 7
  JBoss Core Services for RHEL 8

Via RHSA-2022:7143 https://access.redhat.com/errata/RHSA-2022:7143
Comment 13 errata-xmlrpc 2022-11-08 10:11:07 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2022:7692 https://access.redhat.com/errata/RHSA-2022:7692
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