Debian: DSA-2368-1: lighttpd security update

    Date20 Dec 2011
    CategoryDebian
    181
    Posted ByLinuxSecurity Advisories
    Several vulnerabilities have been discovered in lighttpd, a small and fast webserver with minimal memory footprint. CVE-2011-4362
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    Debian Security Advisory DSA-2368-1                     This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                                  Nico Golde
    Dec 20th, 2011                           http://www.debian.org/security/faq
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    Package        : lighttpd
    Vulnerability  : multiple
    Problem type   : remote
    Debian-specific: no
    Debian bug     : 652726
    CVE IDs        : CVE-2011-4362 CVE-2011-3389
    
    Several vulnerabilities have been discovered in lighttpd, a small and fast
    webserver with minimal memory footprint.
    
    CVE-2011-4362
    
      Xi Wang discovered that the base64 decoding routine which is used to
      decode user input during an HTTP authentication, suffers of a signedness
      issue when processing user input.  As a result it is possible to force
      lighttpd to perform an out-of-bounds read which results in Denial of
      Service conditions.
    
    CVE-2011-3389
    
      When using CBC ciphers on an SSL enabled virtual host to communicate with
      certain client, a so called "BEAST" attack allows man-in-the-middle
      attackers to obtain plaintext HTTP traffic via a blockwise
      chosen-boundary attack (BCBA) on an HTTPS session.  Technically this is
      no lighttpd vulnerability.  However, lighttpd offers a workaround to
      mitigate this problem by providing a possibility to disable CBC ciphers.
    
      This updates includes this option by default. System administrators
      are advised to read the NEWS file of this update (as this may break older
      clients).
    
    
    For the oldstable distribution (lenny), this problem has been fixed in
    version 1.4.19+lenny3.
    
    For the stable distribution (squeeze), this problem has been fixed in
    version 1.4.28-2+squeeze1.
    
    For the testing distribution (squeeze), this problem will be fixed soon.
    
    For the unstable distribution (sid), this problem has been fixed in
    version 1.4.30-1.
    
    
    We recommend that you upgrade your lighttpd 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: This email address is being protected from spambots. You need JavaScript enabled to view it.
    
    
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