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             AUSCERT External Security Bulletin Redistribution

                               ESB-2013.0216
                         lighttpd security update
                             18 February 2013

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           lighttpd
Publisher:         Debian
Operating System:  Debian GNU/Linux 6
Impact/Access:     Denial of Service              -- Remote/Unauthenticated
                   Provide Misleading Information -- Remote/Unauthenticated
                   Unauthorised Access            -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2012-4929 CVE-2009-3555 

Reference:         ASB-2009.1125.2
                   ESB-2012.1126

Original Bulletin: 
   http://www.debian.org/security/2013/dsa-2626

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Debian Security Advisory DSA-2626-1                   security@debian.org
http://www.debian.org/security/                           Thijs Kinkhorst
February 17, 2013                      http://www.debian.org/security/faq
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Package        : lighttpd
Vulnerability  : several issues
Problem type   : remote
Debian-specific: no
CVE ID         : CVE-2009-3555 CVE-2012-4929
Debian Bug     : 700399

Several vulnerabilities were discovered in the TLS/SSL protocol. This
update addresses these protocol vulnerabilities in lighttpd.

CVE-2009-3555

  Marsh Ray, Steve Dispensa, and Martin Rex discovered that the TLS
  and SSLv3 protocols do not properly associate renegotiation
  handshakes with an existing connection, which allows man-in-the-middle
  attackers to insert data into HTTPS sessions. This issue is solved
  in lighttpd by disabling client initiated renegotiation by default.
  
  Those users that do actually need such renegotiations, can reenable
  them via the new 'ssl.disable-client-renegotiation' parameter.

CVE-2012-4929

  Juliano Rizzo and Thai Duong discovered a weakness in the TLS/SSL
  protocol when using compression. This side channel attack, dubbed
  'CRIME', allows eavesdroppers to gather information to recover the
  original plaintext in the protocol. This update disables compression.

For the stable distribution (squeeze), these problems have been fixed in
version 1.4.28-2+squeeze1.2.

For the testing distribution (wheezy), and the unstable distribution (sid)
these problems have 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: debian-security-announce@lists.debian.org
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