CVE-2016-3191 Information

Description

The compile_branch function in pcre_compile.c in PCRE 8.x before 8.39 and pcre2_compile.c in PCRE2 before 10.22 mishandles patterns containing an (*ACCEPT) substring in conjunction with nested parentheses which allows remote attackers to execute arbitrary code or cause a denial of service (stack-based buffer overflow) via a crafted regular expression as demonstrated by a JavaScript RegExp object encountered by Konqueror aka ZDI-CAN-3542.

CVSS Vector

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

Reference

http://rhn.redhat.com/errata/RHSA-2016-1025.html http://vcs.pcre.org/pcre?view=revision&revision=1631 http://vcs.pcre.org/pcre2?view=revision&revision=489 http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html http://www.securityfocus.com/bid/84810 http://www-01.ibm.com/support/docview.wss?uid=isg3T1023886 https://access.redhat.com/errata/RHSA-2016:1132 https://bto.bluecoat.com/security-advisory/sa128 https://bugs.debian.org/815920 https://bugs.debian.org/815921 https://bugs.exim.org/show_bug.cgi?id=1791 https://bugzilla.redhat.com/show_bug.cgi?id=1311503 https://www.tenable.com/security/tns-2016-18

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8