The following security advisory has been published for Gentoo Linux
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Gentoo Linux Security Advisory GLSA 201910-01
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https://security.gentoo.org/
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Severity: High
Title: PHP: Arbitrary code execution
Date: October 25, 2019
Bugs: #698452
ID: 201910-01
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Synopsis
========
A vulnerability in PHP might allow an attacker to execute arbitrary
code.
Background
==========
PHP is an open source general-purpose scripting language that is
especially suited for web development.
Affected packages
=================
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-lang/php < 7.1.33 >= 7.1.33
< 7.2.24 >= 7.2.24
< 7.3.11 >= 7.3.11
Description
===========
A underflow in env_path_info in PHP-FPM under certain configurations
can be exploited to gain remote code execution.
Impact
======
A remote attacker, by sending special crafted HTTP requests, could
possibly execute arbitrary code with the privileges of the process, or
cause a Denial of Service condition.
Workaround
==========
If patching is not feasible, the suggested workaround is to include
checks to verify whether or not a file exists before passing to PHP.
Resolution
==========
All PHP 7.1 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/php-7.1.33"
All PHP 7.2 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/php-7.2.24"
All PHP 7.3 users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=dev-lang/php-7.3.11"
References
==========
[ 1 ] CVE-2019-11043
https://nvd.nist.gov/vuln/detail/CVE-2019-11043
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201910-01
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 2019 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
