33024 : Snort Inline frag3 Pre-Processor ip_conntrack fragmentation DoS
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Views This Week	Views All Time	Added to OSVDB	Last Modified	Modified (since 2008)	Percent Complete
4	1500	about 6 years ago	over 3 years ago	1 times	90%

Timeline

Disclosure Date
2007-02-02

Description

Snort Inline contains a flaw that may allow a remote denial of service. The issue is triggered when an ethernet header doesn't exist in the packet received by Snort, and will result in loss of availability for the service.

Classification

Location: Remote / Network Access
Attack Type: Denial of Service
Impact: Loss of Availability
Solution: Workaround, Upgrade
Exploit: Exploit Public
Disclosure: Vendor Verified
OSVDB: Security Software

Solution

Upgrade to version 2.6.1.3 or higher, as it has been reported to fix this vulnerability. It is also possible to correct the flaw by implementing the following workaround: turn on ip_conntrack on iptables.

Products

Sourcefire, Inc.	Snort	2.6.1.1
		2.6.1.2
		2.7beta1
		2.6.1.3

References

CVE ID: 2007-1398 (see also: NVD)
Bugtraq ID: 22872
Milw0rm: 3434
Exploit Database: 3434
Keyword: IDS Intrusion Detection Systems

Credit

Joel Ebrahimi - jebrahimidemarc.com - Demarc Security, Inc.
Panda Software - Panda Software

CVSSv2 Score

CVSSv2 Base Score = 7.1
Source: nvd.nist.gov | Generated: 2007-03-13 | Disagree?

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