Linux Kernel 2.6_test9_cvs denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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2.6$0-$5k0.00

A vulnerability classified as problematic has been found in Linux Kernel 2.6_test9_cvs (Operating System). Affected is some unknown functionality. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on confidentiality. CVE summarizes:

The random number feature in Linux kernel 2.6 before 2.6.20.13, and 2.6.21.x before 2.6.21.4, (1) does not properly seed pools when there is no entropy, or (2) uses an incorrect cast when extracting entropy, which might cause the random number generator to provide the same values after reboots on systems without an entropy source.

The bug was discovered 06/07/2007. The weakness was disclosed 06/11/2007 (Website). The advisory is available at marc.info. This vulnerability is traded as CVE-2007-2453 since 05/02/2007. The exploitability is told to be difficult. Local access is required to approach this attack. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

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. The vulnerability scanner Nessus provides a plugin with the ID 43642 (CentOS 5 : kernel (CESA-2007:0376)), 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 156102 (Oracle Enterprise Linux Update for Kernel (ELSA-2007-0376)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 days after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 12530.

The vulnerability is also documented in the databases at X-Force (34781) and Tenable (43642). The entries 36765, 36631, 36319 and 37923 are pretty similar.

Productinfo

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Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

CVSSv3info

VulDB Meta Base Score: 2.9
VulDB Meta Temp Score: 2.6

VulDB Base Score: 2.9
VulDB Temp Score: 2.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

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

Local: Yes
Remote: No

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 43642
Nessus Name: CentOS 5 : kernel (CESA-2007:0376)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 58528
OpenVAS Name: Debian Security Advisory DSA 1356-1 (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: 🔍
TippingPoint: 🔍

Timelineinfo

05/02/2007 🔍
06/07/2007 +36 days 🔍
06/08/2007 +1 days 🔍
06/08/2007 +0 days 🔍
06/08/2007 +0 days 🔍
06/11/2007 +2 days 🔍
06/11/2007 +0 days 🔍
06/11/2007 +0 days 🔍
06/14/2007 +3 days 🔍
06/15/2007 +1 days 🔍
06/19/2007 +4 days 🔍
01/06/2010 +932 days 🔍
03/15/2015 +1894 days 🔍
07/20/2019 +1588 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: marc.info
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2007-2453 (🔍)
OVAL: 🔍

X-Force: 34781
SecurityTracker: 1018248
Vulnerability Center: 15396 - Linux Kernel Random Number Feature Entropy Weakness, Low
SecurityFocus: 24390 - Linux Kernel PRNG Entropy Weakness
Secunia: 25594
OSVDB: 37114 - Linux Kernel Random Number Generator Multiple Weaknesses
Vupen: ADV-2007-2105

See also: 🔍

Entryinfo

Created: 03/15/2015 15:58
Updated: 07/20/2019 17:40
Changes: 03/15/2015 15:58 (87), 07/20/2019 17:40 (3)
Complete: 🔍

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