PCRE up to 8.35 Regex Pattern 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-$5k0.00

Summaryinfo

A vulnerability was found in PCRE up to 8.35. It has been classified as critical. The affected element is an unknown function. Performing a manipulation with the input /((?(R)a|(?1)))+/ as part of Regex Pattern results in memory corruption. This vulnerability is identified as CVE-2015-2328. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in PCRE up to 8.35 (Programming Tool Software). This affects an unknown code block. The manipulation with the input value /((?(R)a|(?1)))+/ leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

PCRE before 8.36 mishandles the /((?(R)a|(?1)))+/ pattern and related patterns with certain recursion, which allows remote attackers to cause a denial of service (segmentation fault) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

The weakness was released 12/02/2015 by Wen Guanxing with VenusTech (Website). It is possible to read the advisory at jira.mongodb.org. This vulnerability is uniquely identified as CVE-2015-2328 since 03/18/2015. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 99786 (EulerOS 2.0 SP1 : pcre (EulerOS-SA-2016-1023)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Huawei Local Security Checks and running in the context l. 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 8.36 eliminates this vulnerability. A possible mitigation has been published 7 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99786) and SecurityFocus (BID 74924†). Entries connected to this vulnerability are available at VDB-75660, VDB-79370, VDB-79376 and VDB-79377. 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: 7.0

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

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 99786
Nessus Name: EulerOS 2.0 SP1 : pcre (EulerOS-SA-2016-1023)
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 8.36

Timelineinfo

03/18/2015 🔍
05/31/2015 +74 days 🔍
12/01/2015 +184 days 🔍
12/02/2015 +1 days 🔍
12/03/2015 +1 days 🔍
05/22/2016 +171 days 🔍
05/02/2017 +345 days 🔍
06/28/2022 +1883 days 🔍

Sourcesinfo

Advisory: RHSA-2016:1025
Researcher: Wen Guanxing
Organization: VenusTech
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-2328 (🔍)
GCVE (CVE): GCVE-0-2015-2328
GCVE (VulDB): GCVE-100-79371
SecurityFocus: 74924 - PCRE 'compile_regex()' Function Stack Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 12/03/2015 09:42
Updated: 06/28/2022 09:47
Changes: 12/03/2015 09:42 (52), 04/06/2019 08:51 (22), 06/28/2022 09:47 (2)
Complete: 🔍
Cache ID: 216:729:103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Interested in the pricing of exploits?

See the underground prices here!