Bug 1565318 (CVE-2018-9251) - CVE-2018-9251 libxml2: infinite loop in xz_decomp function in xzlib.c
Summary: CVE-2018-9251 libxml2: infinite loop in xz_decomp function in xzlib.c
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2018-9251
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1565319 1565320 1565321 1565322
Blocks: 1565324
TreeView+ depends on / blocked
 
Reported: 2018-04-09 20:08 UTC by Laura Pardo
Modified: 2021-02-17 00:32 UTC (History)
17 users (show)

Fixed In Version: libxml2 2.9.9
Doc Type: If docs needed, set a value
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Clone Of:
Environment:
Last Closed: 2020-04-28 16:31:56 UTC

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Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2020:1827 0 None None None 2020-04-28 15:57:02 UTC

Description Laura Pardo 2018-04-09 20:08:29 UTC 
A flaw was found in libxml2 2.9.8. The xz_decomp function in xzlib.c, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035.


Reference:
https://bugzilla.gnome.org/show_bug.cgi?id=794914
Comment 1 Laura Pardo 2018-04-09 20:09:07 UTC 
Created mingw-libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1565320]


Created libxml2 tracking bugs for this issue:

Affects: fedora-all [bug 1565321]


Created mingw-libxml2 tracking bugs for this issue:

Affects: epel-7 [bug 1565319]
Comment 5 Stefan Cornelius 2018-04-11 09:22:48 UTC 
Statement:

This issue did not affect the versions of libxml2 as shipped with Red Hat Enterprise Linux 5, 6, and 7.
Comment 9 Sam Fowler 2018-08-22 01:27:27 UTC 
Upstream Patch:

https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74
Comment 11 errata-xmlrpc 2020-04-28 15:57:01 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 8

Via RHSA-2020:1827 https://access.redhat.com/errata/RHSA-2020:1827
Comment 12 Product Security DevOps Team 2020-04-28 16:31:56 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-2018-9251
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