PCRE up to 8.37 Conditional Group memory corruption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in PCRE up to 8.37. This vulnerability affects unknown code of the component Conditional Group Handler. The manipulation leads to memory corruption. This vulnerability is traded as CVE-2015-8383. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in PCRE up to 8.37 (Programming Tool Software). It has been rated as critical. This issue affects some unknown processing of the component Conditional Group Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

PCRE before 8.38 mishandles certain repeated conditional groups, which allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

The weakness was shared 12/02/2015 (oss-sec). It is possible to read the advisory at openwall.com. The identification of this vulnerability is CVE-2015-8383 since 11/30/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

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 196440 (Ubuntu Security Notification for pcre3 vulnerabilities (USN-2943-1)).

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 79810†) and Vulnerability Center (SBV-56432†). The entries VDB-75660, VDB-79370, VDB-79371 and VDB-79376 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Programming Tool Software

Name

• PCRE

Version

• 8.0
• 8.1
• 8.2
• 8.3
• 8.4
• 8.5
• 8.6
• 8.7
• 8.8
• 8.9
• 8.10
• 8.11
• 8.12
• 8.13
• 8.14
• 8.15
• 8.16
• 8.17
• 8.18
• 8.19
• 8.20
• 8.21
• 8.22
• 8.23
• 8.24
• 8.25
• 8.26
• 8.27
• 8.28
• 8.29
• 8.30
• 8.31
• 8.32
• 8.33
• 8.34
• 8.35
• 8.36
• 8.37

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
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Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 88694
Nessus Name: PHP 5.6.x < 5.6.18 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 841810
OpenVAS Name: Ubuntu Update for pcre3 USN-2943-1
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 🔍
12/01/2015 +0 days 🔍
12/02/2015 +0 days 🔍
12/03/2015 +1 days 🔍
02/03/2016 +62 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-2015-8383 (🔍)
GCVE (CVE): GCVE-0-2015-8383
GCVE (VulDB): GCVE-100-79379
SecurityFocus: 79810 - PCRE CVE-2015-8383 Buffer Overflow Vulnerability
Vulnerability Center: 56432 - PCRE before 8.38 Remote DoS due to Mishandling Repeated Conditional Groups, High

See also: 🔍

Entryinfo

Created: 12/03/2015 09:43
Updated: 06/28/2022 10:05
Changes: 12/03/2015 09:43 (63), 08/21/2018 08:49 (13), 06/28/2022 10:05 (3)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

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