PCRE up to 8.37 pcre_exec.c pcre_exec 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 labeled as critical has been found in PCRE up to 8.37. Affected by this vulnerability is the function pcre_exec of the file pcre_exec.c. Such manipulation with the input // leads to memory corruption. This vulnerability is documented as CVE-2015-8380. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in PCRE up to 8.37 (Programming Tool Software) and classified as critical. Affected by this issue is the function pcre_exec of the file pcre_exec.c. The manipulation with the input value // 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. CVE summarizes:

The pcre_exec function in pcre_exec.c in PCRE before 8.38 mishandles a // pattern with a \01 string, which allows remote attackers to cause a denial of service (heap-based 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 released 12/02/2015 by Wen Guanxing (Website). The advisory is shared for download at bugs.exim.org. This vulnerability is handled as CVE-2015-8380 since 12/01/2015. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 89371 (Fedora 22 : pcre-8.37-7.fc22 (2015-afafa29551)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora 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 8.38 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (89371), SecurityFocus (BID 77695†) and Vulnerability Center (SBV-55506†). Entries connected to this vulnerability are available at VDB-75660, VDB-79370, VDB-79371 and VDB-79377. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 89371
Nessus Name: Fedora 22 : pcre-8.37-7.fc22 (2015-afafa29551)
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

11/24/2015 🔍
11/24/2015 +0 days 🔍
12/01/2015 +7 days 🔍
12/01/2015 +0 days 🔍
12/02/2015 +1 days 🔍
12/03/2015 +1 days 🔍
12/11/2015 +8 days 🔍
01/06/2016 +26 days 🔍
03/04/2016 +58 days 🔍
06/28/2022 +2307 days 🔍

Sourcesinfo

Advisory: FEDORA-2015-afafa29551
Researcher: Wen Guanxing
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8380 (🔍)
GCVE (CVE): GCVE-0-2015-8380
GCVE (VulDB): GCVE-100-79376
SecurityFocus: 77695 - PCRE Multiple Heap Based Buffer Overflow Vulnerabilities
Vulnerability Center: 55506 - PCRE <8.38 Remote DoS and Unspecified Other Impact via a Crafted Regular Expression, Medium

See also: 🔍

Entryinfo

Created: 12/03/2015 09:42
Updated: 06/28/2022 09:59
Changes: 12/03/2015 09:42 (65), 06/20/2018 08:39 (14), 06/28/2022 09:59 (3)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to stay up to date on a daily basis?

Enable the mail alert feature now!