CVE-2017-7186

pcre: Invalid Unicode property lookup (8.41/7, 10.24/2)

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

libpcre1 in PCRE 8.40 and libpcre2 in PCRE2 10.23 allow remote attackers to cause a denial of service (segmentation violation for read access, and application crash) by triggering an invalid Unicode property lookup.

Libpcre1 en PCRE 8.40 y libpcre2 en PCRE2 10.23 permiten a atacantes remotos provocar una denegación de servicio (infracción de segmentación para acceso de lectura y caída de aplicación) al activar una búsqueda de propiedad Unicode no válida.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-03-19 CVE Reserved
2017-03-20 CVE Published
2024-06-20 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation
CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (12)

URL	Tag	Source
http://www.securityfocus.com/bid/97030	Vdb Entry
https://bugs.exim.org/show_bug.cgi?id=2052	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://blogs.gentoo.org/ago/2017/03/14/libpcre-invalid-memory-read-in-match-pcre_exec-c	2018-08-17
https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date	2018-08-17
https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date	2018-08-17
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=date	2018-08-17
https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=date	2018-08-17

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2018:2486	2018-08-17
https://security.gentoo.org/glsa/201710-09	2018-08-17
https://security.gentoo.org/glsa/201710-25	2018-08-17
https://access.redhat.com/security/cve/CVE-2017-7186	2018-08-16
https://bugzilla.redhat.com/show_bug.cgi?id=1434504	2018-08-16

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Pcre Search vendor "Pcre"		Pcre Search vendor "Pcre" for product "Pcre"				8.40 Search vendor "Pcre" for product "Pcre" and version "8.40"		-		Affected
Pcre Search vendor "Pcre"		Pcre2 Search vendor "Pcre" for product "Pcre2"				10.23 Search vendor "Pcre" for product "Pcre2" and version "10.23"		-		Affected