Perl PCRE up to 6.6 input validation

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

Summaryinfo

A vulnerability categorized as problematic has been discovered in Perl PCRE. Affected by this vulnerability is an unknown functionality. Such manipulation leads to input validation. This vulnerability is listed as CVE-2006-7225. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Perl PCRE (Programming Language Software). Affected by this issue is an unknown functionality. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. CVE summarizes:

Perl-Compatible Regular Expression (PCRE) library before 6.7 allows context-dependent attackers to cause a denial of service (error or crash) via a regular expression that involves a "malformed POSIX character class", as demonstrated via an invalid character after a [[ sequence.

The bug was discovered 07/04/2006. The weakness was presented 12/03/2007 by Ludwig Nussel (Website). The advisory is shared for download at redhat.com. This vulnerability is handled as CVE-2006-7225 since 11/13/2007. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 517 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 67613 (Oracle Linux 4 : pcre (ELSA-2007-1068)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux 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 1.00 eliminates this vulnerability. A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (40022), Tenable (67613), SecurityFocus (BID 26725†), OSVDB (40757†) and Secunia (SA28041†). See VDB-3287, VDB-3284, VDB-3285 and VDB-3282 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: 67613
Nessus Name: Oracle Linux 4 : pcre (ELSA-2007-1068)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

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: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: PCRE 1.00

Timelineinfo

07/04/2006 🔍
07/04/2006 +0 days 🔍
07/04/2006 +0 days 🔍
11/13/2007 +497 days 🔍
12/03/2007 +20 days 🔍
12/03/2007 +0 days 🔍
12/04/2007 +1 days 🔍
12/30/2007 +26 days 🔍
07/12/2013 +2021 days 🔍
03/16/2015 +612 days 🔍
08/02/2019 +1600 days 🔍

Sourcesinfo

Advisory: redhat.com
Researcher: Ludwig Nussel
Status: Not defined
Confirmation: 🔍

CVE: CVE-2006-7225 (🔍)
GCVE (CVE): GCVE-0-2006-7225
GCVE (VulDB): GCVE-100-39908

OVAL: 🔍

X-Force: 40022
SecurityFocus: 26725 - PCRE Perl Compatible Regular Expressions Library POSIX Denial Of Service Vulnerability
Secunia: 28041
OSVDB: 40757 - CVE-2006-7225 - PCRE - Denial of Service Issue
Vulnerability Center: 17226 - PCRE < 6.7 Remote DoS via a Malformed Regular Expression, Medium

See also: 🔍

Entryinfo

Created: 03/16/2015 13:43
Updated: 08/02/2019 11:16
Changes: 03/16/2015 13:43 (78), 08/02/2019 11:16 (7)
Complete: 🔍
Cache ID: 216:84B:103

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