Security Incidents mailing list archives

Re: DNS CACHE POISONING? - Our Portal is redirecting to our first competition


From: "Stephen John Smoogen" <smooge () gmail com>
Date: Wed, 23 Jan 2008 10:15:16 -0700

On Jan 22, 2008 8:04 PM, Jeff Plewes <plewes () gmail com> wrote:
We have a similar problem on one of our co-location servers:

- centos5 i386
- apache 2.2.3-11.el5.centos (2.2.6 backport)
- php 5.2.5 (compiled from source)

The issue appears at random..   when it is present, a request to the
web server will respond with a redirect to a spyware or malware
download site.   This will continue to redirect 10% of the traffic to
the box until httpd is restarted.  The redirection script is not found
in any file on the server filesystem and believed to be injected into
the response stream via a compromised httpd process in memory.

This issue was happening on the same box when It used to be apache
2.0.56, php 5.1.0 running redhat 9.  upgrading the distribution,
apache, php etc has so far not resolved the issue.

At this point we are upgrading to apache 2.2.3-11.el5.centos.3 (2.2.8
backport) in hopes that the recent security patches in this build
relating to XSS will solve the issue.

I would really like to find the source of the problem, though.

-Jeff


Hmmm I wonder if its related to the Javascript hack that people have
been seeing at isc.sans.org and other places.

http://isc.sans.org/diary.html?date=2008-01-18


-- 
Stephen J Smoogen. -- CSIRT/Linux System Administrator
How far that little candle throws his beams! So shines a good deed
in a naughty world. = Shakespeare. "The Merchant of Venice"


Current thread: