Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2016.0064
sudo security update
12 January 2016
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AusCERT Security Bulletin Summary
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Product: sudo
Publisher: Debian
Operating System: Debian GNU/Linux 7
Debian GNU/Linux 8
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Modify Arbitrary Files -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2015-5602
Original Bulletin:
http://www.debian.org/security/2016/dsa-3440
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running sudo check for an updated version of the software for their
operating system.
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Debian Security Advisory DSA-3440-1 security@debian.org
https://www.debian.org/security/ Ben Hutchings
January 11, 2016 https://www.debian.org/security/faq
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Package : sudo
CVE ID : CVE-2015-5602
Debian Bug : 804149
When sudo is configured to allow a user to edit files under a directory
that they can already write to without using sudo, they can actually
edit (read and write) arbitrary files. Daniel Svartman reported that a
configuration like this might be introduced unintentionally if the
editable files are specified using wildcards, for example:
operator ALL=(root) sudoedit /home/*/*/test.txt
The default behaviour of sudo has been changed so that it does not allow
editing of a file in a directory that the user can write to, or that is
reached by following a symlink in a directory that the user can write
to. These restrictions can be disabled, but this is strongly
discouraged.
For the oldstable distribution (wheezy), this problem has been fixed
in version 1.8.5p2-1+nmu3+deb7u1.
For the stable distribution (jessie), this problem has been fixed in
version 1.8.10p3-1+deb8u3.
For the testing distribution (stretch), this problem has been fixed
in version 1.8.15-1.1.
For the unstable distribution (sid), this problem has been fixed in
version 1.8.15-1.1.
We recommend that you upgrade your sudo 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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