VDB-79383 · CVE-2015-8387 · BID 82990

PCRE up to 8.37 Subroutine Call Regex Pattern numeric error

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.
9.4	$0-$5k	0.00

A vulnerability, which was classified as very critical, was found in PCRE up to 8.37 (Programming Tool Software). This affects an unknown part of the component Subroutine Call Handler. The manipulation with the input value (?123) 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:

PCRE before 8.38 mishandles (?123) subroutine calls and related subroutine calls, which allows remote attackers to cause a denial of service (integer 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 presented 12/02/2015 (Website). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2015-8387 since 12/01/2015. 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 pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/28/2022).

The vulnerability scanner Nessus provides a plugin with the ID 89641 (Fedora 22 : mingw-pcre-8.38-1.fc22 (2016-f59a8ff5d0)), 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 3 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (89641). See 75660, 79370, 79371 and 79376 for similar entries.

Productinfo

Type

Programming Tool Software

Name

PCRE

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.4

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

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

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: 89641
Nessus Name: Fedora 22 : mingw-pcre-8.38-1.fc22 (2016-f59a8ff5d0)
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

12/01/2015 🔍
12/01/2015 +0 days 🔍
12/02/2015 +1 days 🔍
12/03/2015 +1 days 🔍
02/16/2016 +75 days 🔍
03/04/2016 +17 days 🔍
06/28/2022 +2307 days 🔍

Sourcesinfo

Advisory: FEDORA-2016-f59a8ff5d0
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8387 (🔍)
SecurityFocus: 82990

See also: 🔍

Entryinfo

Created: 12/03/2015 09:43
Updated: 06/28/2022 11:03
Changes: 12/03/2015 09:43 (44), 04/22/2018 13:27 (26), 06/28/2022 10:58 (3), 06/28/2022 11:03 (1)
Complete: 🔍