Bug 1954232 (CVE-2021-3517) - CVE-2021-3517 libxml2: Heap-based buffer overflow in xmlEncodeEntitiesInternal() in entities.c
Summary: CVE-2021-3517 libxml2: Heap-based buffer overflow in xmlEncodeEntitiesInterna...
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2021-3517
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: 1954233 1954234 1956999 1957000 1957001 1957002
Blocks: 1952638 1954253
TreeView+ depends on / blocked
 
Reported: 2021-04-27 18:54 UTC by Guilherme de Almeida Suckevicz
Modified: 2022-04-20 19:42 UTC (History)
21 users (show)

Fixed In Version: libxml2 2.9.11
Clone Of:
Environment:
Last Closed: 2021-06-29 16:41:02 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2021:2569 0 None None None 2021-06-29 16:27:45 UTC
Red Hat Product Errata RHSA-2022:1389 0 None None None 2022-04-20 19:42:00 UTC
Red Hat Product Errata RHSA-2022:1390 0 None None None 2022-04-20 19:30:31 UTC

Description Guilherme de Almeida Suckevicz 2021-04-27 18:54:09 UTC 
A heap-based buffer overflow was found in libxml2 when processing truncated UTF-8 input.

Reference:
https://gitlab.gnome.org/GNOME/libxml2/-/issues/235

Upstream patch:
https://gitlab.gnome.org/GNOME/libxml2/-/commit/bf22713507fe1fc3a2c4b525cf0a88c2dc87a3a2
Comment 1 Guilherme de Almeida Suckevicz 2021-04-27 18:54:40 UTC 
Created libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1954234]


Created mingw-libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1954233]
Comment 3 Guilherme de Almeida Suckevicz 2021-04-30 12:36:44 UTC 
Acknowledgments:

Name: zodf0055980 (SQLab NCTU Taiwan)
Comment 6 Todd Cullum 2021-05-04 20:16:55 UTC 
Upstream patch: https://gitlab.gnome.org/GNOME/libxml2/-/commit/bf22713507fe1fc3a2c4b525cf0a88c2dc87a3a2
Comment 7 Todd Cullum 2021-05-04 22:22:27 UTC 
Statement:

This flaw is out of support scope for Red Hat Enterprise Linux 6 and 7. To learn more about Red Hat Enterprise Linux support life cycles, please see https://access.redhat.com/support/policy/updates/errata .
Comment 8 errata-xmlrpc 2021-06-29 16:27:43 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2021:2569 https://access.redhat.com/errata/RHSA-2021:2569
Comment 9 Product Security DevOps Team 2021-06-29 16:41:02 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-2021-3517
Comment 10 errata-xmlrpc 2022-04-20 19:30:28 UTC 
This issue has been addressed in the following products:

  Red Hat JBoss Core Services

Via RHSA-2022:1390 https://access.redhat.com/errata/RHSA-2022:1390
Comment 11 errata-xmlrpc 2022-04-20 19:41:57 UTC 
This issue has been addressed in the following products:

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

Via RHSA-2022:1389 https://access.redhat.com/errata/RHSA-2022:1389
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