[ASA-201903-4] pcre: denial of service

[Morten Linderud]

Arch Linux Security Advisory ASA-201903-4
=========================================

Severity: Low
Date    : 2019-03-03
CVE-ID  : CVE-2017-11164
Package : pcre
Type    : denial of service
Remote  : Yes
Link    : https://security.archlinux.org/AVG-351

Summary
=======

The package pcre before version 8.43-1 is vulnerable to denial of
service.

Resolution
==========

Upgrade to 8.43-1.

# pacman -Syu "pcre>=8.43-1"

The problem has been fixed upstream in version 8.43.

Workaround
==========

None.

Description
===========

In PCRE 8.41, the OP_KETRMAX feature in the match function in
pcre_exec.c allows stack exhaustion (uncontrolled recursion) when
processing a crafted regular expression.

Impact
======

A remote attacker can crash the process with a crafted regular
expression.

References
==========

http://seclists.org/oss-sec/2017/q3/111
https://bugzilla.redhat.com/show_bug.cgi?id=1470107
https://security.archlinux.org/CVE-2017-11164
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