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Debian Security Advisory 3074-2

Debian Security Advisory 3074-2
Posted Nov 19, 2014
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3074-2 - 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.

tags | advisory
systems | linux, debian
SHA-256 | eb5ca3638356ab944b043dc1e88c1b86cc5025738f16872711478b87772079b4

Debian Security Advisory 3074-2

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- -------------------------------------------------------------------------
Debian Security Advisory DSA-3074-2 security@debian.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@lists.debian.org
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