PCRE 7.3 numeric error

CVSS Meta Temp Score
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in PCRE 7.3. This vulnerability affects unknown code. Performing a manipulation results in numeric error. This vulnerability was named CVE-2007-4766. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in PCRE 7.3 (Programming Tool Software). This affects an unknown code. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple integer overflows in Perl-Compatible Regular Expression (PCRE) library before 7.3 allow context-dependent attackers to cause a denial of service (crash) or execute arbitrary code via unspecified escape (backslash) sequences.

The bug was discovered 11/05/2007. The weakness was presented 11/07/2007 by Tavis Ormandy with Google Security Team (Website). It is possible to read the advisory at us-cert.gov. This vulnerability is uniquely identified as CVE-2007-4766 since 09/10/2007. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 27629 (Debian DSA-1399-1 : pcre3 - several vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165048 (SUSE Security Update for pcre (SUSE-SA:2007:062)).

Upgrading to version 7.3 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 (38276), Tenable (27629), SecurityFocus (BID 26346†), OSVDB (40759†) and Secunia (SA27538†). See VDB-35351, VDB-39605, VDB-39604 and VDB-39602 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 27629
Nessus Name: Debian DSA-1399-1 : pcre3 - several vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 58731
OpenVAS Name: Debian Security Advisory DSA 1399-1 (pcre3)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PCRE 7.3

Timelineinfo

09/10/2007 🔍
11/05/2007 +56 days 🔍
11/05/2007 +0 days 🔍
11/05/2007 +0 days 🔍
11/05/2007 +0 days 🔍
11/06/2007 +1 days 🔍
11/06/2007 +0 days 🔍
11/07/2007 +1 days 🔍
11/07/2007 +0 days 🔍
11/13/2007 +6 days 🔍
03/16/2015 +2680 days 🔍
07/30/2019 +1597 days 🔍

Sourcesinfo

Advisory: us-cert.gov
Researcher: Tavis Ormandy
Organization: Google Security Team
Status: Not defined
Confirmation: 🔍

CVE: CVE-2007-4766 (🔍)
GCVE (CVE): GCVE-0-2007-4766
GCVE (VulDB): GCVE-100-39603

OVAL: 🔍

X-Force: 38276
SecurityFocus: 26346 - PCRE Regular Expression Library Multiple Security Vulnerabilities
Secunia: 27538
OSVDB: 40759 - CVE-2007-4766 - PCRE - Multiple Integer Overflow Issues
Vulnerability Center: 16785 - PCRE <7.3 Remote DoS Related to Unspecified Escape (Backslash) Sequences, Medium
Vupen: ADV-2007-3725

See also: 🔍

Entryinfo

Created: 03/16/2015 12:18
Updated: 07/30/2019 09:37
Changes: 03/16/2015 12:18 (79), 07/30/2019 09:37 (4)
Complete: 🔍
Cache ID: 216:644:103

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