CVE-2017-7186

Published: Mar 20, 2017Modified: May 13, 2026

7.5

Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploitability: 3.9 / Impact: 3.6

Source: NVD

Description

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.

Affected (2)

Products: Pcre: Pcre, Pcre2

Pcre

2 products

Pcre

Pcre2

Configuration A

2 vulnerable

Vulnerable Software	Affected Versions
Pcre Pcre	Version 8.40
Pcre Pcre2	Version 10.23

Related CWEs

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.

References (20)

http://www.securityfocus.com/bid/97030

Source: cve@mitre.org

https://access.redhat.com/errata/RHSA-2018:2486

Source: cve@mitre.org

https://blogs.gentoo.org/ago/2017/03/14/libpcre-invalid-memory-read-in-match-pcre_exec-c/

Source: cve@mitre.org

PatchThird Party Advisory

https://bugs.exim.org/show_bug.cgi?id=2052

Source: cve@mitre.org

Third Party Advisory

https://security.gentoo.org/glsa/201710-09

Source: cve@mitre.org

https://security.gentoo.org/glsa/201710-25

Source: cve@mitre.org

https://vcs.pcre.org/pcre/code/trunk/pcre_internal.h?r1=1649&r2=1688&sortby=date

Source: cve@mitre.org

Patch

https://vcs.pcre.org/pcre/code/trunk/pcre_ucd.c?r1=1490&r2=1688&sortby=date

Source: cve@mitre.org

Patch

https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_internal.h?r1=600&r2=670&sortby=date

Source: cve@mitre.org

Patch

https://vcs.pcre.org/pcre2/code/trunk/src/pcre2_ucd.c?r1=316&r2=670&sortby=date

Source: cve@mitre.org

Patch

http://www.securityfocus.com/bid/97030