Linux Kernel up to 2.6.18.4 ptrace-thrash.c denial of service

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

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel 2.6.18/2.6.18.1/2.6.18.2/2.6.18.3/2.6.18.4. Impacted is an unknown function of the file ptrace-thrash.c. The manipulation leads to denial of service. This vulnerability is traded as CVE-2007-0771. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Linux Kernel 2.6.18/2.6.18.1/2.6.18.2/2.6.18.3/2.6.18.4 (Operating System). This issue affects an unknown functionality of the file ptrace-thrash.c. The manipulation with an unknown input 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 summary by CVE is:

The utrace support in Linux kernel 2.6.18, and other versions, allows local users to cause a denial of service (system hang) related to "MT exec + utrace_attach spin failure mode," as demonstrated by ptrace-thrash.c.

The bug was discovered 04/30/2007. The weakness was shared 05/01/2007 with Red Hat (Website). The advisory is shared at redhat.com. The identification of this vulnerability is CVE-2007-0771 since 02/06/2007. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 223 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 25126 (CentOS 5 : Kernel (CESA-2007:0169)), 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 117538 (CentOS Security Update for Kernel (CESA-2007:169)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 15 minutes after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (34128), Tenable (25126), SecurityFocus (BID 23720†), OSVDB (35927†) and Secunia (SA25080†). The entry VDB-35540 is related to this item. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Operating System

Vendor

Linux

Name

Kernel

Version

License

open-source

Website

Vendor: https://www.kernel.org/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.2
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.2
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 25126
Nessus Name: CentOS 5 : Kernel (CESA-2007:0169)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 80056
OpenVAS Name: Oracle Linux Local Check: ELSA-2007-0347
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: 🔍

Timelineinfo

09/20/2006 🔍
02/06/2007 +139 days 🔍
04/30/2007 +83 days 🔍
04/30/2007 +0 days 🔍
04/30/2007 +0 days 🔍
04/30/2007 +0 days 🔍
05/01/2007 +0 days 🔍
05/01/2007 +0 days 🔍
05/01/2007 +0 days 🔍
05/02/2007 +1 days 🔍
05/02/2007 +0 days 🔍
05/13/2007 +10 days 🔍
05/28/2007 +15 days 🔍
03/13/2015 +2846 days 🔍
07/20/2019 +1590 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: redhat.com
Organization: Red Hat
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-0771 (🔍)
GCVE (CVE): GCVE-0-2007-0771
GCVE (VulDB): GCVE-100-36569

OVAL: 🔍

X-Force: 34128
SecurityFocus: 23720 - Linux Kernel UTrace Unspecified Local Denial of Service Vulnerability
Secunia: 25080
OSVDB: 35927 - Linux Kernel utrace Support Unspecified Local DoS
SecurityTracker: 1017979
Vulnerability Center: 15240 - Linux Kernel Vulnerability Allows Local User to Cause DoS, Low

See also: 🔍

Entryinfo

Created: 03/13/2015 14:56
Updated: 07/20/2019 06:38
Changes: 03/13/2015 14:56 (83), 07/20/2019 06:38 (7)
Complete: 🔍
Cache ID: 216::103

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