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  • [SECURITY] [DSA 2519-1] isc-dhcp security update

    From Nico Golde@1:229/2 to All on Wed Aug 1 20:40:02 2012
    From: [email protected]

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    - ------------------------------------------------------------------------- Debian Security Advisory DSA-2519-1 [email protected] http://www.debian.org/security/ Nico Golde August 1, 2012 http://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package : isc-dhcp
    Vulnerability : several
    Problem type : remote
    Debian-specific: no
    CVE ID : CVE-2011-4539 CVE-2012-3571 CVE-2012-3954

    Several security vulnerabilities affecting ISC dhcpd, a server for
    automatic IP address assignment, have been discovered. Additionally, the latest security update for isc-dhcp, DSA-2516-1, did not properly apply
    the patches for CVE-2012-3571 and CVE-2012-3954. This has been addressed
    in this additional update.

    CVE-2011-4539

    BlueCat Networks discovered that it is possible to crash DHCP servers
    configured to evaluate requests with regular expressions via crafted
    DHCP request packets.

    CVE-2012-3571

    Markus Hietava of the Codenomicon CROSS project discovered that it is
    possible to force the server to enter an infinite loop via messages with
    malformed client identifiers.

    CVE-2012-3954

    Glen Eustace discovered that DHCP servers running in DHCPv6 mode
    and possibly DHCPv4 mode suffer of memory leaks while processing messages.
    An attacker can use this flaw to exhaust resources and perform denial
    of service attacks.


    For the stable distribution (squeeze), this problem has been fixed in
    version 4.1.1-P1-15+squeeze5.

    For the testing (wheezy) and unstable (sid) distributions, this problem
    will be fixed soon.


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

    Mailing list: [email protected]
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