|
Snort Rule Matching Backtrack Denial of Service Vulnerability
|
|
Secunia Advisory:
|
SA23716
|
|
|
Release Date:
|
2007-01-11
|
|
Last Update:
|
2007-01-17
|
|
Popularity:
|
11,140 views
|
|
|
Critical:
|
Less critical
|
|
Impact:
|
DoS
|
|
Where:
|
From remote
|
|
Solution Status:
|
Vendor Patch
|
|
| Software: | Snort 1.8.x
Snort 1.9.x
Snort 2.0.x
Snort 2.1.x
Snort 2.2.x
Snort 2.3.x
Snort 2.4.x
Snort 2.6.x
|
|
|
Subscribe:
|
Instant alerts on relevant vulnerabilities 
|
|
| CVE reference: | CVE-2006-6931
|
|
Description:
Randy Smith, Christian Estan, and Somesh Jha have reported a vulnerability in Snort, which potentially can be exploited by malicious people to cause a DoS (Denial of Service).
The problem is that the rule matching algorithm of Snort can be exploited to perform numerous time-consuming operations, which may lead to a decreased or zero detection rate via a specially crafted packet.
The vulnerability is reported in version 2.4.3. Other versions may also be affected.
Solution:
Update to version 2.6.1 or later.
Provided and/or discovered by:
Randy Smith, Christian Estan, and Somesh Jha, University of Wisconsin-Madison
Changelog:
2007-01-17: Added CVE reference and included information on patched version in "Solution" section.
Original Advisory:
http://www.cs.wisc.edu/~smithr/pubs/acsac2006.pdf
|
|
|
Track this Secunia Advisory
|
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.
Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.
|
|
|
About this Secunia Advisory
|
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
|
