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Insecure Library Loading
Moderately critical

Apache HTTP Server mod_rewrite and mod_dav Vulnerabilities

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Release Date:  2013-05-29    Last Update:  2013-07-12    Views:  11,893

Secunia Advisory SA53154

Where:

From remote

Impact:

DoS, System access

Solution Status:

Vendor Patch

CVE Reference(s):

Description


Two vulnerabilities have been reported in Apache HTTP Server, which can be exploited by malicious people to cause a DoS (Denial of Service) and compromise a vulnerable system.

1) An error within the "do_rewritelog()" function (modules/mappers/mod_rewrite.c) does not properly handle certain escape sequences when writing to the log file and can be exploited to execute arbitrary commands by sending a specially crafted HTTP request.

Successful exploitation of this vulnerability requires a user to view the log file in a terminal emulator.

2) An error when handling a MERGE request within modules/dav/main/mod_dav.c can be exploited to cause a segmentation fault via a specially crafted MERGE request containing a URI that is not configured for DAV within the source href of the XML body.

The vulnerabilities are reported in versions prior to 2.2.25.


Solution:
Update to version 2.2.25.

Provided and/or discovered by:
1) Disclosed by Joe Orton in a SVN commit. The vendor additionally credits Eric Covener and Jeff Trawick.
2) The vendor credits Ben Reser.

Original Advisory:
Apache:
http://www.apache.org/dist/httpd/CHANGES_2.2.25
http://svn.apache.org/viewvc?view=revision&revision=r1485668

Joe Orton SVN Commit:
http://svn.apache.org/viewvc?view=revision&revision=r1469311
http://people.apache.org/~jorton/mod_rewrite-CVE-2013-1862.patch

Deep Links:
Links available to Secunia VIM customers

Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: Apache HTTP Server mod_rewrite and mod_dav Vulnerabilities

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