Stack-based buffer overflow in PCRE - CVE-2016-3191

Vulnerability identifier: #VU32304

CSH Severity: High

CVSS v4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2016-3191

CWE-ID: CWE-121

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within 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 when processing a crafted regular expression, as demonstrated by a JavaScript RegExp object encountered by Konqueror, aka ZDI-CAN-3542. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

PCRE
Red Hat Enterprise Linux Server from RHUI
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux for Power, big endian
Red Hat Enterprise Linux for Scientific Computing
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux EUS Compute Node
Red Hat Enterprise Linux Server - Extended Update Support
Red Hat Enterprise Linux for Power, big endian - Extended Update Support
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Enterprise Linux Server - TUS
pcre (Alpine package)
pcre (Red Hat package)

Update to version 8.39.

PCRE - update to 8.39
pcre (Alpine package) - update to 8.38-r1
pcre (Red Hat package) - update to 8.32-15.el7_2.1

• 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

• Stack-based buffer overflow in PCRE
• Stack-based buffer overflow in pcre (Alpine package)
• Red Hat Enterprise Linux 7 update for pcre