PCRE up to 8.37 Subroutine Call Regex Pattern numeric error

CVSS Meta Temp Score
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CTI Interest Score
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9.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in PCRE up to 8.37 and classified as critical. The impacted element is an unknown function of the component Subroutine Call Handler. Performing a manipulation with the input (?123) as part of Regex Pattern results in numeric error. This vulnerability was named CVE-2015-8387. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

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 databases at Tenable (89641) and SecurityFocus (BID 82990†). See VDB-75660, VDB-79370, VDB-79371 and VDB-79376 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
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: 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 (🔍)
GCVE (CVE): GCVE-0-2015-8387
GCVE (VulDB): GCVE-100-79383
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: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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