Debian: DSA-2216-1: isc-dhcp security update

    Date 10 Apr 2011
    91
    Posted By LinuxSecurity Advisories
    Sebastian Krahmer and Marius Tomaschewski discovered that dhclient of isc-dhcp, a DHCP client, is not properly filtering shell meta-characters in certain options in DHCP server responses. These options are reused in an insecure fashion by dhclient scripts. This allows an attacker to execute
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    Debian Security Advisory DSA-2216-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                                Nico Golde
    April 10, 2011                         https://www.debian.org/security/faq
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    Package        : isc-dhcp
    Vulnerability  : missing input sanitization
    Problem type   : remote
    Debian-specific: no
    CVE ID         : CVE-2011-0997
    Debian bug     : 621099
    
    Sebastian Krahmer and Marius Tomaschewski discovered that dhclient of
    isc-dhcp, a DHCP client, is not properly filtering shell meta-characters
    in certain options in DHCP server responses.  These options are reused in
    an insecure fashion by dhclient scripts.  This allows an attacker to execute
    arbitrary commands with the privileges of such a process by sending crafted
    DHCP options to a client using a rogue server.
    
    
    For the oldstable distribution (lenny), this problem has been fixed in
    additional update for dhcp3.
    
    For the stable distribution (squeeze), this problem has been fixed in
    version 4.1.1-P1-15+squeeze2.
    
    For the testing distribution (wheezy), this problem will be fixed soon.
    
    For the unstable distribution (sid), this problem has been fixed in
    version 4.1.1-P1-16.1.
    
    
    We recommend that you upgrade your isc-dhcp 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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
    

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