Bug 1211278 (CVE-2015-1819) - CVE-2015-1819 libxml2: denial of service processing a crafted XML document
Summary: CVE-2015-1819 libxml2: denial of service processing a crafted XML document
Keywords:
Status: CLOSED ERRATA
Alias: CVE-2015-1819
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: 1214163 1286496 1286497
Blocks: 1193283 1211280
TreeView+ depends on / blocked
 
Reported: 2015-04-13 13:46 UTC by Vasyl Kaigorodov
Modified: 2021-02-17 05:26 UTC (History)
7 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
A denial of service flaw was found in the way the libxml2 library parsed certain XML files. An attacker could provide a specially crafted XML file that, when parsed by an application using libxml2, could cause that application to use an excessive amount of memory.
Clone Of:
Environment:
Last Closed: 2019-06-08 02:40:50 UTC
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2015:1419 0 normal SHIPPED_LIVE Low: libxml2 security and bug fix update 2015-07-20 18:06:35 UTC
Red Hat Product Errata RHSA-2015:2550 0 normal SHIPPED_LIVE Moderate: libxml2 security update 2015-12-07 16:59:33 UTC

Description Vasyl Kaigorodov 2015-04-13 13:46:10 UTC 
Florian Weimer from Red Hat reported an issue against libxml2, where a parser which uses libxml2 chokes on a crafted XML document, allocating gigabytes of data.
This is a fine line between API misuse and an libxml2 bug.
Daniel Veillard have a fix for this issue already.
Comment 3 Daniel Veillard 2015-04-14 10:07:59 UTC 
Patch updstream

https://git.gnome.org/browse/libxml2/commit/?id=213f1fe0d76d30eaed6e5853057defc43e6df2c9

Daniel
Comment 4 Maumita Mandal 2015-04-21 14:22:19 UTC 
(In reply to Daniel Veillard from comment #3)
> Patch updstream
> 
> https://git.gnome.org/browse/libxml2/commit/
> ?id=213f1fe0d76d30eaed6e5853057defc43e6df2c9
> 
> Daniel


Could you please let me know the version in which the bug has been fixed and provide the URL for downloading the same ?
Comment 6 Huzaifa S. Sidhpurwala 2015-04-22 06:40:04 UTC 
Acknowledgements:

Name: Florian Weimer (Red Hat Product Security)
Comment 7 Huzaifa S. Sidhpurwala 2015-04-22 06:45:20 UTC 
Statement:

Red Hat Product Security has rated this issue as having low security impact, a future update may address this flaw in libxml2.
Comment 8 Florian Weimer 2015-04-22 06:53:32 UTC 
I don't think the upstream fix is quite right, as explained here:

  <https://bugzilla.gnome.org/show_bug.cgi?id=748278>
Comment 10 Aakash 2015-05-20 10:15:29 UTC 
Could you please help with the patch to fix this vulnerability.
Comment 11 Florian Weimer 2015-05-20 10:26:20 UTC 
(In reply to Aakash from comment #10)
> Could you please help with the patch to fix this vulnerability.

Aakash, please open a customer support case here:

  <https://access.redhat.com/support/>.

This bug here is a public resource and thus not suitable for responding to support queries, I'm afraid.
Comment 12 errata-xmlrpc 2015-07-22 07:43:24 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 6

Via RHSA-2015:1419 https://rhn.redhat.com/errata/RHSA-2015-1419.html
Comment 14 Fedora Update System 2015-11-26 20:56:44 UTC 
libxml2-2.9.3-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 15 Fedora Update System 2015-11-30 23:22:17 UTC 
libxml2-2.9.3-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 16 Aakash 2015-12-03 13:06:03 UTC 
I am getting the following error when i am trying to start apache server with mod security 2.8.0 and updated libxml version 2.9.3:

httpd: Syntax error on line 55 of /opt/apache/conf/httpd.conf: Cannot load /opt/apache/modules/mod_security2.so into server: /opt/apache/modules/mod_security2.so: symbol xmlOutputBufferGetSize, version LIBXML2_2.9.0 not defined in file libxml2.so.2 with link time reference

Could you please help.
Comment 17 errata-xmlrpc 2015-12-07 11:59:52 UTC 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2015:2550 https://rhn.redhat.com/errata/RHSA-2015-2550.html
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