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[gentoo-announce] [ GLSA 202006-16 ] PCRE2: Denial of service

Posted on 15 June 2020
Gentoo-announce

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Gentoo Linux Security Advisory GLSA 202006-16
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https://security.gentoo.org/
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Severity: Normal
Title: PCRE2: Denial of service
Date: June 15, 2020
Bugs: #717800
ID: 202006-16

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Synopsis
========
A vulnerability in PCRE2 could lead to a Denial of Service condition.

Background
==========
PCRE2 is a project based on PCRE (Perl Compatible Regular Expressions)
which has a new and revised API.

Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/pcre2 < 10.34 >= 10.34

Description
===========
PCRE2 has a flaw when handling JIT-compiled regex using the X pattern.

Impact
======
An attacker could cause a possible Denial of Service condition.

Workaround
==========
There is no known workaround at this time.

Resolution
==========
All PCRE2 users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-libs/pcre2-10.34"

References
==========
[ 1 ] CVE-2019-20454
https://nvd.nist.gov/vuln/detail/CVE-2019-20454

Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

https://security.gentoo.org/glsa/202006-16

Concerns?
=========
Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======
Copyright 2020 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

https://creativecommons.org/licenses/by-sa/2.5

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