CVE-2015-8381

pcre: Buffer overflow caused by duplicate named references (8.38/36)

Severity Score

7.5

*CVSS v2

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The compile_regex function in pcre_compile.c in PCRE before 8.38 and pcre2_compile.c in PCRE2 before 10.2x mishandles the /(?J:(?|(:(?|(?'R')(\k'R')|((?'R')))H'Rk'Rf)|s(?'R'))))/ and /(?J:(?|(:(?|(?'R')(\z(?|(?'R')(\k'R')|((?'R')))k'R')|((?'R')))H'Ak'Rf)|s(?'R')))/ patterns, and related patterns with certain group references, which allows remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror.

La función compile_regex en pcre_compile.c en PCRE en versiones anteriores a 8.38 y pcre2_compile.c en PCRE2 en versiones anteriores a 10.2x no maneja correctamente los patrones /(?J:(?|(:(?|(?'R')(\k'R')|((?'R')))H'Rk'Rf)|s(?'R'))))/ y /(?J:(?|(:(?|(?'R')(\z(?|(?'R')(\k'R')|((?'R')))k'R')|((?'R')))H'Ak'Rf)|s(?'R')))/ , y patrones relacionados con ciertas referencias de grupo, lo que permite a atacantes remotos causar una denegación de servicio (desbordamiento de buffer basado en memoria dinámica) 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

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
2024-03-03 EPSS Updated
2024-08-06 CVE Updated
2024-08-06 First Exploit
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

CAPEC

References (11)

URL	Tag	Source
http://www.openwall.com/lists/oss-security/2015/11/29/1	Mailing List
http://www.securityfocus.com/bid/76187	Third Party Advisory
https://bto.bluecoat.com/security-advisory/sa128	Third Party Advisory

URL	Date	SRC
http://vcs.pcre.org/pcre/code/trunk/ChangeLog?view=markup	2024-08-06
https://bugs.exim.org/show_bug.cgi?id=1667	2024-08-06
https://bugs.exim.org/show_bug.cgi?id=1672	2024-08-06

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-2015-8381	2016-11-15
https://bugzilla.redhat.com/show_bug.cgi?id=1287711	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