Linux Kernel 2.6.22 sec=ntlmv2i authentication spoofing

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel 2.6.22 and classified as critical. The impacted element is an unknown function. Performing a manipulation of the argument sec=ntlmv2i results in authentication spoofing. This vulnerability is known as CVE-2007-3843. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Linux Kernel 2.6.22 (Operating System). It has been classified as critical. This affects an unknown part. The manipulation of the argument sec=ntlmv2i with an unknown input leads to a authentication spoofing vulnerability. CWE is classifying the issue as CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. This is going to have an impact on integrity. The summary by CVE is:

The Linux kernel before 2.6.23-rc1 checks the wrong global variable for the CIFS sec mount option, which might allow remote attackers to spoof CIFS network traffic that the client configured for security signatures, as demonstrated by lack of signing despite sec=ntlmv2i in a SetupAndX request.

The bug was discovered 07/03/2007. The weakness was published 08/09/2007 (Website). The advisory is shared at secunia.com. This vulnerability is uniquely identified as CVE-2007-3843 since 07/18/2007. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 37 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 30250 (openSUSE 10 Security Update : kernel (kernel-4970)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157333 (Oracle Enterprise Linux Security Update for Linux 4 kernel (ELSA-2007-0937)).

Upgrading to version 2.6.22 eliminates this vulnerability. A possible mitigation has been published 7 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (36025), Tenable (30250), SecurityFocus (BID 25244†), OSVDB (37123†) and Secunia (SA26366†). Similar entries are available at VDB-3333, VDB-38037, VDB-38779 and VDB-38313. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Authentication spoofing
CWE: CWE-290 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 30250
Nessus Name: openSUSE 10 Security Update : kernel (kernel-4970)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 58585
OpenVAS Name: Debian Security Advisory DSA 1363-1 (linux-2.6)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Kernel 2.6.22

Timelineinfo

07/03/2007 🔍
07/03/2007 +0 days 🔍
07/03/2007 +0 days 🔍
07/08/2007 +5 days 🔍
07/18/2007 +10 days 🔍
08/09/2007 +22 days 🔍
08/09/2007 +0 days 🔍
08/09/2007 +0 days 🔍
09/10/2007 +32 days 🔍
02/04/2008 +147 days 🔍
02/11/2008 +7 days 🔍
03/15/2015 +2589 days 🔍
07/25/2019 +1593 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: secunia.com⛔
Status: Not defined
Confirmation: 🔍

CVE: CVE-2007-3843 (🔍)
GCVE (CVE): GCVE-0-2007-3843
GCVE (VulDB): GCVE-100-38265

OVAL: 🔍

X-Force: 36025
SecurityFocus: 25244 - Linux Kernel CIFS Local Security Bypass Weakness
Secunia: 26366
OSVDB: 37123 - CVE-2007-3843 - Linux - Spoofing Issue
Vulnerability Center: 16016 - Linux Kernel Vulnerability Allows CIFS Network Traffic Spoofing, Medium

See also: 🔍

Entryinfo

Created: 03/15/2015 15:58
Updated: 07/25/2019 16:08
Changes: 03/15/2015 15:58 (83), 07/25/2019 16:08 (4)
Complete: 🔍
Cache ID: 216:E78:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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