PCRE up to 8.37 Nexting pcre_compile.c pcre_compile Regex Pattern memory corruption

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

Summaryinfo

A vulnerability was found in PCRE up to 8.37. It has been rated as problematic. Affected by this vulnerability is the function pcre_compile of the file pcre_compile.c of the component Nexting Handler. This manipulation with the input [: as part of Regex Pattern causes memory corruption. This vulnerability is tracked as CVE-2015-8391. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in PCRE up to 8.37 (Programming Tool Software). It has been declared as problematic. Affected by this vulnerability is the function pcre_compile of the file pcre_compile.c of the component Nexting Handler. The manipulation with the input value [: leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. The summary by CVE is:

The pcre_compile function in pcre_compile.c in PCRE before 8.38 mishandles certain [: nesting, which allows remote attackers to cause a denial of service (CPU consumption) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

The weakness was disclosed 12/02/2015 (oss-sec). It is possible to read the advisory at openwall.com. This vulnerability is known as CVE-2015-8391 since 11/30/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 88694 (PHP 5.6.x < 5.6.18 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157182 (Oracle Enterprise Linux Security Update for pcre (ELSA-2016-1025)).

Upgrading to version 8.38 eliminates this vulnerability. A possible mitigation has been published 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (88694), SecurityFocus (BID 82990†) and Vulnerability Center (SBV-56436†). The entries VDB-75695, VDB-79371, VDB-79376 and VDB-79377 are pretty similar. 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: 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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 88694
Nessus Name: PHP 5.6.x < 5.6.18 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 881932
OpenVAS Name: CentOS Update for pcre CESA-2016:1025 centos7
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: PCRE 8.38

Timelineinfo

11/30/2015 🔍
11/30/2015 +0 days 🔍
12/01/2015 +0 days 🔍
12/02/2015 +1 days 🔍
12/03/2015 +1 days 🔍
01/11/2016 +39 days 🔍
02/03/2016 +23 days 🔍
02/08/2016 +5 days 🔍
02/10/2016 +2 days 🔍
06/28/2022 +2329 days 🔍

Sourcesinfo

Advisory: RHSA-2016:1132
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8391 (🔍)
GCVE (CVE): GCVE-0-2015-8391
GCVE (VulDB): GCVE-100-79387
SecurityFocus: 82990 - PCRE Multiple Security Vulnerabilities
Vulnerability Center: 56436 - PCRE before 8.38 Remote DoS and Other Unspecified Impact via a Crafted Regex in the pcre_compile Function, High

See also: 🔍

Entryinfo

Created: 12/03/2015 09:44
Updated: 06/28/2022 11:48
Changes: 12/03/2015 09:44 (67), 08/21/2018 08:50 (13), 06/28/2022 11:41 (3), 06/28/2022 11:48 (1)
Complete: 🔍
Cache ID: 216::103

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