25837 : Snort HTTP Inspect Pre-Processor Uricontent Bypass
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Info

Last Modified
about 1 year ago

Percent Complete
100%

Disclosure
May 31, 2006

Discovery
May 17, 2006

Dates

Exploit
May 31, 2006

Solution
Unknown

Keywords

 Intrusion Detection System

Description

 Snort contains a flaw that may allow a remote attacker to bypass IDS detection. The issue is triggered by adding a carriage return to the end of a URL, directly before the HTTP protocol declaration. It is possible that the flaw may allow bypass detection of "uricontent" rules resulting in a loss of integrity.

Classification

 Location: Remote/Network Access Required
Attack Type: Input Manipulation
Impact: Loss of Integrity
Exploit: Exploit Available
Disclosure: OSVDB Verified

Solution

 Currently, there are no known workarounds or upgrades to correct this issue. However, Demarc Threat Research Team has released an unofficial patch to address this vulnerability.

Products
Sourcefire, Inc.
Watch-list
Snort
Watch-list
 2.4.0
2.4.1
2.4.2
2.4.3
2.4.4

References

Tools & Filters

Nessus

 27448

Manual Testing Notes

Credit
  • Blake Hartstein - bhartsteinBrand New Doo Doodemarc.com - Demarc Threat Research Team

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