Debian: DSA-2309-1: openssl security update

    Date13 Sep 2011
    CategoryDebian
    49
    Posted ByLinuxSecurity Advisories
    Several fraudulent SSL certificates have been found in the wild issued by the DigiNotar Certificate Authority, obtained through a security compromise of said company. After further updates on this incident, it has been determined that all of DigiNotar's signing certificates can no
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    Debian Security Advisory DSA-2309-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                          Raphael Geissert
    September 13, 2011                     http://www.debian.org/security/faq
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    Package        : openssl
    Vulnerability  : compromised certificate authority
    Problem type   : remote
    Debian-specific: no
    CVE ID         : CVE-2011-1945
    
    Several fraudulent SSL certificates have been found in the wild issued
    by the DigiNotar Certificate Authority, obtained through a security
    compromise of said company. After further updates on this incident, it
    has been determined that all of DigiNotar's signing certificates can no
    longer be trusted.
    Debian, like other software distributors and vendors, has decided to
    distrust all of DigiNotar's CAs. In this update, this is done in the
    crypto library (a component of the OpenSSL toolkit) by marking such
    certificates as revoked.
    Any application that uses said component should now reject certificates
    signed by DigiNotar. Individual applications may allow users to overrride
    the validation failure. However, making exceptions is highly
    discouraged and should be carefully verified.
    
    Additionally, a vulnerability has been found in the ECDHE_ECDS cipher
    where timing attacks make it easier to determine private keys. The
    Common Vulnerabilities and Exposures project identifies it as
    CVE-2011-1945.
    
    For the oldstable distribution (lenny), these problems have been fixed in
    version 0.9.8g-15+lenny12.
    
    For the stable distribution (squeeze), these problems have been fixed in
    version 0.9.8o-4squeeze2.
    
    For the testing distribution (wheezy), these problems will be fixed soon.
    
    For the unstable distribution (sid), these problems have been fixed in
    version 1.0.0e-1.
    
    We recommend that you upgrade your openssl 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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