CVE-2015-8384

pcre: buffer overflow caused by recursive back reference by name within certain group (8.38/4)

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

PCRE before 8.38 mishandles the /(?J)(?'d'(?'d'\g{d}))/ pattern and related patterns with certain recursive back 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, a related issue to CVE-2015-8392 and CVE-2015-8395.

PCRE en versiones anteriores a 8.38 no maneja correctamente el patrón /(?J)(?'d'(?'d'\g{d}))/ y patrones relacionados con ciertas referencias hacia atrás recursivas, lo que permite a atacantes remotos causar una denegación de servicio (desbordamiento de buffer) o posiblemente tener otro impacto no especificado a través de una expresión regular manipulada, según lo demostrado por un objeto JavaScript RegExp encontrado por Konqueror, un problema relacionado con CVE-2015-8392 y CVE-2015-8395.

PHP is an HTML-embedded scripting language commonly used with the Apache HTTP Server. The rh-php56 packages provide a recent stable release of PHP with PEAR 1.9.5 and enhanced language features including constant expressions, variadic functions, arguments unpacking, and the interactive debuger. The memcache, mongo, and XDebug extensions are also included. The rh-php56 Software Collection has been upgraded to version 5.6.25, which provides a number of bug fixes and enhancements over the previous version. Security Fixes in the rh-php56-php component have been added.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2015-12-01 CVE Reserved
2015-12-02 CVE Published
2024-08-06 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-122: Heap-based Buffer Overflow

CAPEC

References (8)

URL	Tag	Source
http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup	Release Notes
http://www.openwall.com/lists/oss-security/2015/11/29/1	Mailing List
https://bto.bluecoat.com/security-advisory/sa128	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2016-2750.html	2018-01-05
https://access.redhat.com/errata/RHSA-2016:1132	2018-01-05
https://security.gentoo.org/glsa/201607-02	2018-01-05
https://access.redhat.com/security/cve/CVE-2015-8384	2016-11-15
https://bugzilla.redhat.com/show_bug.cgi?id=1287623	2016-11-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Pcre Search vendor "Pcre"		Perl Compatible Regular Expression Library Search vendor "Pcre" for product "Perl Compatible Regular Expression Library"				<= 8.37 Search vendor "Pcre" for product "Perl Compatible Regular Expression Library" and version " <= 8.37"		-		Affected