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    Debian: DSA-2519-1: isc-dhcp security update

    Date
    102
    Posted By
    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
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    Debian Security Advisory DSA-2519-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                                Nico Golde
    August 1, 2012                         https://www.debian.org/security/faq
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    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: 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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