CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9	$0-$5k	0.00

A vulnerability was found in Snort up to 2.4.1. It has been rated as critical. This issue affects the function PrintTcpOptions of the component Verbose Mode. The manipulation as part of a TCP SACK Packet leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability.

The weakness was published 09/13/2005 by Jennifer Steffens with Snort Team (Website). The advisory is shared at snort.org. The attack may be initiated remotely. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1499 for this issue.

After before and not just, there has been an exploit disclosed. The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at snort.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Exploit-DB (1213).

Productinfo

Name

• Snort

Version

• 2.4.0
• 2.4.1

CPE 2.3info

• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: snort.org

Timelineinfo

09/11/2005 🔍
09/13/2005 +2 days 🔍
09/13/2005 +0 days 🔍
09/13/2005 +0 days 🔍
07/04/2019 +5041 days 🔍

Sourcesinfo

Advisory: snort.org
Researcher: Jennifer Steffens
Organization: Snort Team
Status: Not defined
Secunia: 16786 - Snort TCP SACK Option Handling Denial of Service, Moderately Critical
OSVDB: 19346 - Snort TCP SACK Option PrintTcpOptions() Crafted Packet DoS

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 09/13/2005 13:11
Updated: 07/04/2019 12:44
Changes: 09/13/2005 13:11 (57), 07/04/2019 12:44 (4)
Complete: 🔍

Discussion

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