PCRE up to 8.37 Regex Pattern memory corruption

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

Summaryinfo

A vulnerability, which was classified as critical, has been found in PCRE up to 8.37. Impacted is an unknown function. This manipulation with the input /(?|(\kPm)|(?Pm))/ as part of Regex Pattern causes memory corruption. This vulnerability is handled as CVE-2015-8385. The attack can be initiated remotely. There is not any exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as very critical was found in PCRE up to 8.37 (Programming Tool Software). Affected by this vulnerability is an unknown functionality. The manipulation with the input value /(?|(\kPm)|(?Pm))/ leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

PCRE before 8.38 mishandles the /(?|(\k'Pm')|(?'Pm'))/ pattern and related patterns with certain forward references, 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 released 12/02/2015 (oss-sec). The advisory is shared at openwall.com. This vulnerability is known as CVE-2015-8385 since 12/01/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. The price 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 157182 (Oracle Enterprise Linux Security Update for pcre (ELSA-2016-1025)).

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 85572†). Entries connected to this vulnerability are available at VDB-75695, VDB-79371, VDB-79376 and VDB-79377. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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: 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: 🔍

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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: 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 8.38

Timelineinfo

12/01/2015 🔍
12/01/2015 +0 days 🔍
12/02/2015 +1 days 🔍
12/02/2015 +0 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-2015-8385 (🔍)
GCVE (CVE): GCVE-0-2015-8385
GCVE (VulDB): GCVE-100-79381
SecurityFocus: 85572 - PCRE Regular CVE-2015-8385 Pattern Handling Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 12/03/2015 09:43
Updated: 06/28/2022 10:34
Changes: 12/03/2015 09:43 (43), 04/06/2019 08:51 (28), 06/28/2022 10:23 (2), 06/28/2022 10:28 (1), 06/28/2022 10:34 (1)
Complete: 🔍
Cache ID: 216:440:103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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