Bug 929082 (CVE-2013-1845) - CVE-2013-1845 Subversion (mod_dav_svn): DoS (excessive memory use) when large number of properties are set or deleted
Summary: CVE-2013-1845 Subversion (mod_dav_svn): DoS (excessive memory use) when large...
Status: CLOSED ERRATA
Alias: CVE-2013-1845
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: impact=low,public=20130404,reported=2...
Keywords: Security
Depends On: 947369 947370 947372 947374 948813
Blocks: 929099
TreeView+ depends on / blocked
 
Reported: 2013-03-29 08:29 UTC by Huzaifa S. Sidhpurwala
Modified: 2019-06-08 19:29 UTC (History)
5 users (show)

(edit)
Clone Of:
(edit)
Last Closed: 2013-11-18 13:13:36 UTC


Attachments (Terms of Use)
patch-against-1.6.20 (6.34 KB, patch)
2013-03-29 08:33 UTC, Huzaifa S. Sidhpurwala
no flags Details | Diff
patch-against-1.7.8 (4.62 KB, patch)
2013-03-29 08:33 UTC, Huzaifa S. Sidhpurwala
no flags Details | Diff


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2013:0737 normal SHIPPED_LIVE Moderate: subversion security update 2013-04-11 21:47:11 UTC

Description Huzaifa S. Sidhpurwala 2013-03-29 08:29:55 UTC
It was found that Subversion's mod_dav_svn Apache HTTPD server module will use excessive amounts of memory when a large number of properties are set or deleted on a node. This can lead to a DoS. 

Setting or deleting a large number of properties on a node (file or directory)  will result in a large amount of memory use.  Due to the  memory pooling behavior of Apache httpd and Subversion the completion of the request will not result in the immediate release of memory used. Repeated commits with the same properties will result in each httpd process plateauing out at some amount of memory.  This could result in a Denial of Service if the system is exhausted of all available memory.

Acknowledgements:

Red Hat would like to thank the Apache Subversion project for reporting this issue. Upstream acknowledges Alexander Klink as the original reporter of this flaw.

Comment 2 Huzaifa S. Sidhpurwala 2013-03-29 08:33:35 UTC
Created attachment 717966 [details]
patch-against-1.6.20

Comment 3 Huzaifa S. Sidhpurwala 2013-03-29 08:33:58 UTC
Created attachment 717967 [details]
patch-against-1.7.8

Comment 5 Huzaifa S. Sidhpurwala 2013-04-04 09:09:36 UTC
This issue affects the version of subversion as shipped with Red Hat Enterprise Linux 5 and 6.

This issue affects the version of subversion as shipped with Fedora 17 and Fedora 18.

Comment 6 Jan Lieskovsky 2013-04-05 12:26:17 UTC
External References:

http://subversion.apache.org/security/CVE-2013-1845-advisory.txt

Comment 8 Jan Lieskovsky 2013-04-05 12:58:36 UTC
Created subversion tracking bugs for this issue

Affects: fedora-all [bug 948813]

Comment 9 errata-xmlrpc 2013-04-11 17:49:13 UTC
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6
  Red Hat Enterprise Linux 5

Via RHSA-2013:0737 https://rhn.redhat.com/errata/RHSA-2013-0737.html


Note You need to log in before you can comment on or make changes to this bug.