bugtraq - [SECURITY] [DSA 3074-2] php5 regression update

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Message-ID: <20141119104942.GA28073@scapa.corsac.net>
Date: Wed, 19 Nov 2014 11:49:46 +0100
From: Yves-Alexis Perez <corsac@...ian.org>
To: bugtraq@...urityfocus.com
Subject: [SECURITY] [DSA 3074-2] php5 regression update

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Debian Security Advisory DSA-3074-2                   security@...ian.org
http://www.debian.org/security/                         Yves-Alexis Perez
November 19, 2014                      http://www.debian.org/security/faq
- -------------------------------------------------------------------------

Package        : php5

The previous update for php5, DSA-3074-1, introduced regression in the
sessionclean cron script. The change was intended to fix a potential
symlink attack using filenames including the NULL character (Debian bug
#766147), but depended on sed package version too recent, not in Wheezy.

This update reverts the fix, so people are advised to keep kernel
symlink protection (sysctl fs.protected_symlinks=1) enabled as it is by
default on Wheezy, which is enough to prevent successful exploitation.

For the stable distribution (wheezy), this problem has been fixed in
version 5.4.35-0+deb7u2.

We recommend that you upgrade your php5 packages.

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@...ts.debian.org
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