Red Hat Enterprise Linux prior 4.0 denial of service

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

Summaryinfo

A vulnerability identified as problematic has been detected in Red Hat Enterprise Linux. Affected by this issue is some unknown functionality. Performing a manipulation results in denial of service. This vulnerability is cataloged as CVE-2006-7226. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Red Hat Enterprise Linux (Operating System). This affects 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 availability. The summary by CVE is:

Perl-Compatible Regular Expression (PCRE) library before 6.7 does not properly calculate the compiled memory allocation for regular expressions that involve a quantified "subpattern containing a named recursion or subroutine reference," which allows context-dependent attackers to cause a denial of service (error or crash).

The bug was discovered 07/04/2006. The weakness was shared 12/03/2007 by Ludwig Nussel as Bug 384781 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2006-7226 since 11/13/2007. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 513 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 67061 (CentOS 4 : pcre (CESA-2007:1068)), 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 165666 (SUSE Enterprise Linux Security Update php4, php5 (SUSE-SA:2008:004)).

Upgrading to version 4.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (40020), Tenable (67061), SecurityFocus (BID 26727†), OSVDB (40755†) and Secunia (SA28041†). The entries VDB-3287, VDB-3284, VDB-3285 and VDB-3282 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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

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

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Exploitinginfo

Class: Denial of service
CWE: CWE-404
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: 67061
Nessus Name: CentOS 4 : pcre (CESA-2007:1068)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 870181
OpenVAS Name: Rhino Software Serv-U SITE SET Command Denial Of Service vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Enterprise Linux 4.0

Timelineinfo

07/04/2006 🔍
07/04/2006 +0 days 🔍
11/08/2007 +492 days 🔍
11/13/2007 +5 days 🔍
11/19/2007 +6 days 🔍
11/29/2007 +10 days 🔍
12/03/2007 +4 days 🔍
12/03/2007 +0 days 🔍
12/13/2007 +10 days 🔍
06/29/2013 +2025 days 🔍
03/16/2015 +625 days 🔍
07/31/2019 +1598 days 🔍

Sourcesinfo

Vendor: redhat.com

Advisory: Bug 384781
Researcher: Ludwig Nussel
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-7226 (🔍)
GCVE (CVE): GCVE-0-2006-7226
GCVE (VulDB): GCVE-100-39909

OVAL: 🔍

X-Force: 40020
SecurityFocus: 26727 - PCRE Perl Compatible Regular Expression Subpattern Memory Allocation Denial Of Service Vulnerability
Secunia: 28041 - Avaya Products PCRE Multiple Vulnerabilities, Moderately Critical
OSVDB: 40755 - CVE-2006-7226 - PCRE - Denial of Service Issue
Vulnerability Center: 16865 - Perl-Compatible Regular Expression (PCRE) Library Allows Remote Attacker to Execute Arbitrary Code, High

See also: 🔍

Entryinfo

Created: 03/16/2015 13:43
Updated: 07/31/2019 09:24
Changes: 03/16/2015 13:43 (82), 07/31/2019 09:24 (4)
Complete: 🔍
Cache ID: 216:5EE:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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