Bugzilla will be upgraded to version 5.0 on a still to be determined date in the near future. The original upgrade date has been delayed.
First Last Prev Next    This bug is not in your last search results.
Bug 1348845 - (CVE-2016-4463) CVE-2016-4463 xerces-c: Stack overflow when parsing deeply nested DTD
CVE-2016-4463 xerces-c: Stack overflow when parsing deeply nested DTD
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
: ---
: ---
Assigned To: Red Hat Product Security
impact=moderate,public=20160629,repor...
: Reopened, Security
Depends On: 1351469 1631343 1631344 1351467 1351468 1534481 1534482
Blocks: 1348850
  Show dependency tree / graph
 
Reported: 2016-06-22 04:21 EDT by Adam Mariš
Modified: 2018-10-30 04:00 EDT (History)
21 users (show)

See Also:
Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
A stack exhaustion flaw was found in the way Xerces-C XML parser handled deeply nested DTDs. An attacker could potentially use this flaw to crash an application using Xerces-C by tricking it into processing specially crafted data.
Story Points: ---
Clone Of:
Environment:
Last Closed: 2016-07-11 01:26:48 EDT
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

Attachments (Terms of Use)
Add an attachment (proposed patch, testcase, etc.)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:3335 None None None 2018-10-30 04:00 EDT

  None (edit)
Description Adam Mariš 2016-06-22 04:21:05 EDT 
The Xerces-C XML parser fails to successfully parse a DTD that is deeply nested, and this causes a stack overflow, which makes a denial of service attack against many applications possible by an unauthenticated attacker.

Upstream patch:

http://svn.apache.org/viewvc?view=revision&revision=1747619

Upstream bugs:

https://issues.apache.org/jira/browse/XERCESC-2066
https://issues.apache.org/jira/browse/XERCESC-2069

In addition, a related enhancement was made to enable applications to fully disable DTD processing through the use of an environment variable.

http://svn.apache.org/viewvc?view=revision&revision=1747620

External References:

http://xerces.apache.org/xerces-c/secadv/CVE-2016-4463.txt
Comment 1 Andrej Nemec 2016-06-30 03:17:46 EDT 
Created mingw-xerces-c tracking bugs for this issue:

Affects: fedora-all [bug 1351468]
Comment 2 Andrej Nemec 2016-06-30 03:17:56 EDT 
Created xerces-c tracking bugs for this issue:

Affects: fedora-all [bug 1351467]
Comment 3 Andrej Nemec 2016-06-30 03:18:04 EDT 
Created xerces-c27 tracking bugs for this issue:

Affects: fedora-all [bug 1351469]
Comment 4 Andrej Nemec 2016-06-30 03:18:49 EDT 
Public via:

http://seclists.org/oss-sec/2016/q2/625
Comment 5 Fedora Update System 2016-07-02 11:23:28 EDT 
xerces-c-3.1.4-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 6 Fedora Update System 2016-07-05 00:57:33 EDT 
mingw-xerces-c-3.1.4-1.fc24 has been pushed to the Fedora 24 stable repository. If problems still persist, please make note of it in this bug report.
Comment 10 Fedora Update System 2016-07-06 01:50:53 EDT 
mingw-xerces-c-3.1.4-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 11 Fedora Update System 2016-07-06 01:51:42 EDT 
xerces-c-3.1.4-1.fc22 has been pushed to the Fedora 22 stable repository. If problems still persist, please make note of it in this bug report.
Comment 12 Fedora Update System 2016-07-06 01:54:19 EDT 
mingw-xerces-c-3.1.4-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 13 Fedora Update System 2016-07-06 01:55:00 EDT 
xerces-c-3.1.4-1.fc23 has been pushed to the Fedora 23 stable repository. If problems still persist, please make note of it in this bug report.
Comment 14 Dhiru Kholia 2018-01-10 11:32:35 EST 
Statement:

Red Hat Product Security has rated this issue as having Moderate security impact. This issue is not currently planned to be addressed in future updates. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/ and Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.
Comment 28 errata-xmlrpc 2018-10-30 03:59:49 EDT 
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2018:3335 https://access.redhat.com/errata/RHSA-2018:3335
Note You need to log in before you can comment on or make changes to this bug.
First Last Prev Next    This bug is not in your last search results.