Several vulnerabilities have been discovered in sudo, a program designed to allow a sysadmin to give limited root privileges to users. The Common Vulnerabilities and Exposures project identifies the following problems:

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Debian Security Advisory DSA-2642-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
http://www.debian.org/security/                           Michael Gilbert
March 09, 2013                         http://www.debian.org/security/faq
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Package        : sudo
Vulnerability  : several issues
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2013-1775 CVE-2013-1776
Debian Bug     : 701838 701839

Several vulnerabilities have been discovered in sudo, a program designed
to allow a sysadmin to give limited root privileges to users. The Common
Vulnerabilities and Exposures project identifies the following problems:

CVE-2013-1775

    Marco Schoepl discovered an authentication bypass when the clock is
    set to the UNIX epoch [00:00:00 UTC on 1 January 1970].

CVE-2013-1776

    Ryan Castellucci and James Ogden discovered aspects of an issue that
    would allow session id hijacking from another authorized tty.

For the stable distribution (squeeze), these problems have been fixed in
version 1.7.4p4-2.squeeze.4.

For the testing (wheezy) and unstable (sid) distributions, these problems
have been fixed in version 1.8.5p2-1+nmu1.

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: http://www.debian.org/security/

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