CVE-2015-8388

pcre: buffer overflow for forward reference within backward assertion with excess closing parenthesis (8.38/18)

Severity Score

7.5

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

PCRE before 8.38 mishandles the /(?=di(?<=(?1))|(?=(.))))/ pattern and related patterns with an unmatched closing parenthesis, 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.

PCRE en versiones anteriores a 8.38 no maneja correctamente el patrón /(?=di(?<=(?1))|(?=(.))))/ y patrones relacionados con un paréntesis de cierre no emparejado, 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.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

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
2023-09-23 EPSS Updated
2024-08-06 CVE 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
CWE-185: Incorrect Regular Expression

CAPEC

References (12)

URL	Tag	Source
http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886	Third Party Advisory
http://www.openwall.com/lists/oss-security/2015/11/29/1	Mailing List
http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html	Third Party Advisory
http://www.securityfocus.com/bid/85576	Third Party Advisory
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-2016-1025.html	2019-12-27
http://rhn.redhat.com/errata/RHSA-2016-2750.html	2019-12-27
http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup	2019-12-27
https://access.redhat.com/errata/RHSA-2016:1132	2019-12-27
https://security.gentoo.org/glsa/201607-02	2019-12-27
https://access.redhat.com/security/cve/CVE-2015-8388	2016-11-15
https://bugzilla.redhat.com/show_bug.cgi?id=1237223	2016-11-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				7 Search vendor "Oracle" for product "Linux" and version "7"		-		Affected
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