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.
8.7	$0-$5k	0.00

A vulnerability classified as critical has been found in Linux Kernel 2.6.0 (Operating System). This affects the function local_bh_disable. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on integrity, and availability. The summary by CVE is:

The dev_queue_xmit function in Linux kernel 2.6 can fail before calling the local_bh_disable function, which could lead to data corruption and "node lockups." NOTE: it is not clear whether this issue is exploitable.

The issue has been introduced in 12/18/2003. The weakness was released 01/30/2007 with Red Hat (Website). It is possible to read the advisory at linux.bkbits.net. This vulnerability is uniquely identified as CVE-2006-6535 since 12/13/2006. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 1139 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 36838 (CentOS 4 : kernel (CESA-2007:0014)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 115509 (Red Hat Kernel Security Update (RHSA-2007:0014)).

Upgrading to version 2.6 eliminates this vulnerability. A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (36838). Entries connected to this vulnerability are available at 2551, 2589, 2647 and 2661.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 2.6.0

License

• open-source

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 8.7

VulDB Base Score: 9.1
VulDB Temp Score: 8.7
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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
ATT&CK: T1068

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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

Nessus ID: 36838
Nessus Name: CentOS 4 : kernel (CESA-2007:0014)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 58357
OpenVAS Name: Debian Security Advisory DSA 1304-1 (kernel-source-2.6.8)
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

Timelineinfo

12/18/2003 🔍
12/13/2006 +1091 days 🔍
01/30/2007 +48 days 🔍
01/30/2007 +0 days 🔍
01/30/2007 +0 days 🔍
01/30/2007 +0 days 🔍
01/31/2007 +1 days 🔍
01/31/2007 +0 days 🔍
02/04/2007 +4 days 🔍
04/23/2009 +809 days 🔍
03/13/2015 +2150 days 🔍
07/14/2019 +1584 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: linux.bkbits.net
Organization: Red Hat
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-6535 (🔍)
OVAL: 🔍

Vulnerability Center: 14203 - Linux Kernel 2.6 dev_queue_xmit Function Vulnerability Can Lead to Data Corruption and Node Lockups, Medium
SecurityFocus: 22317 - Linux Kernel Dev_Queue_XMIT Local Denial of Service Vulnerability
Secunia: 23997 - Red Hat update for kernel, Less Critical
OSVDB: 33030 - CVE-2006-6535 - Linux - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 03/13/2015 10:40
Updated: 07/14/2019 12:07
Changes: 03/13/2015 10:40 (80), 07/14/2019 12:07 (7)
Complete: 🔍

Discussion

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