Looknstop Look 'n' Stop Firewall 2.07 input validation

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.
3.7$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Looknstop Look 'n' Stop Firewall 2.07. This affects an unknown function. This manipulation causes input validation. This vulnerability is handled as CVE-2011-0652. Additionally, an exploit exists. It is advisable to implement restrictive firewalling.

Detailsinfo

A vulnerability classified as problematic was found in Looknstop Look 'n' Stop Firewall 2.07 (Firewall Software). Affected by this vulnerability is some unknown processing. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. The summary by CVE is:

lnsfw1.sys 6.0.2900.5512 in Look n Stop Firewall 2.06p4 and 2.07 allows local users to cause a denial of service (crash) via a crafted 0x80000064 IOCTL request that triggers an assertion failure. NOTE: some of these details are obtained from third party information.

The bug was discovered 11/08/2009. The weakness was released 01/21/2011 by Heurs (Website). It is possible to read the advisory at exploit-db.com. This vulnerability is known as CVE-2011-0652 since 01/26/2011. The exploitation appears to be easy. Attacking locally is a requirement. The exploitation doesn't need any form of authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Heurs and been published immediately after the advisory. It is possible to download the exploit 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 439 days. During that time the estimated underground price was around $0-$5k.

Proper firewalling of is able to address this issue.

The vulnerability is also documented in the databases at X-Force (64851), Exploit-DB (16021), SecurityFocus (BID 45949†), OSVDB (70638†) and Secunia (SA43044†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.7

VulDB Base Score: 4.0
VulDB Temp Score: 3.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Heurs
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

11/08/2009 🔍
01/21/2011 +439 days 🔍
01/21/2011 +0 days 🔍
01/21/2011 +0 days 🔍
01/21/2011 +0 days 🔍
01/25/2011 +4 days 🔍
01/26/2011 +0 days 🔍
01/28/2011 +2 days 🔍
03/20/2015 +1512 days 🔍
03/04/2025 +3637 days 🔍

Sourcesinfo

Advisory: exploit-db.com
Researcher: Heurs
Status: Not defined

CVE: CVE-2011-0652 (🔍)
GCVE (CVE): GCVE-0-2011-0652
GCVE (VulDB): GCVE-100-56251
X-Force: 64851 - Look 'n' Stop Firewall IOCTL denial of service
SecurityFocus: 45949 - Look 'n' Stop Firewall 'lnsfw1.sys' Driver IOCTL Handling Local Denial of Service Vulnerability
Secunia: 43044
OSVDB: 70638 - Look 'n' Stop Firewall lnsfw1.sys IOCTL Handling Local DoS

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

Entryinfo

Created: 03/20/2015 16:16
Updated: 03/04/2025 04:59
Changes: 03/20/2015 16:16 (66), 01/09/2018 10:19 (2), 03/04/2025 04:59 (16)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Might our Artificial Intelligence support you?

Check our Alexa App!