Debian: DSA-2390-1: openssl security update

    Date15 Jan 2012
    CategoryDebian
    31
    Posted ByLinuxSecurity Advisories
    Several vulnerabilities were discovered in OpenSSL, an implementation of TLS and related protocols. The Common Vulnerabilities and Exposures project identifies the following vulnerabilities:
    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA1
    
    - -------------------------------------------------------------------------
    Debian Security Advisory DSA-2390-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    http://www.debian.org/security/                            Florian Weimer
    January 15, 2012                       http://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : openssl
    Vulnerability  : several
    Problem type   : remote
    Debian-specific: no
    CVE ID         : CVE-2011-4108 CVE-2011-4109 CVE-2011-4354
                     CVE-2011-4576 CVE-2011-4619
    
    Several vulnerabilities were discovered in OpenSSL, an implementation
    of TLS and related protocols.  The Common Vulnerabilities and
    Exposures project identifies the following vulnerabilities:
    
    CVE-2011-4108
    	The DTLS implementation performs a MAC check only if certain
    	padding is valid, which makes it easier for remote attackers
    	to recover plaintext via a padding oracle attack.
    
    CVE-2011-4109 
    	A double free vulnerability when X509_V_FLAG_POLICY_CHECK is
    	enabled, allows remote attackers to cause applications crashes
    	and potentially allow execution of arbitrary code by
    	triggering failure of a policy check.
    
    CVE-2011-4354
    	On 32-bit systems, the operations on NIST elliptic curves
    	P-256 and P-384 are not correctly implemented, potentially
    	leaking the private ECC key of a TLS server.  (Regular
    	RSA-based keys are not affected by this vulnerability.)
    
    CVE-2011-4576
    	The SSL 3.0 implementation does not properly initialize data
    	structures for block cipher padding, which might allow remote
    	attackers to obtain sensitive information by decrypting the
    	padding data sent by an SSL peer.
    
    CVE-2011-4619
    	The Server Gated Cryptography (SGC) implementation in OpenSSL
    	does not properly handle handshake restarts, unnecessarily
    	simplifying CPU exhaustion attacks.
    
    For the oldstable distribution (lenny), these problems have been fixed
    in version 0.9.8g-15+lenny15.
    
    For the stable distribution (squeeze), these problems have been fixed
    in version 0.9.8o-4squeeze5.
    
    For the testing distribution (wheezy) and the unstable distribution
    (sid), these problems have been fixed in version 1.0.0f-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.
    
    You are not authorised to post comments.

    Comments powered by CComment

    LinuxSecurity Poll

    What do you think of the articles on LinuxSecurity?

    No answer selected. Please try again.
    Please select either existing option or enter your own, however not both.
    Please select minimum 0 answer(s) and maximum 3 answer(s).
    /main-polls/24-what-do-you-think-of-the-quality-of-the-articles-on-linuxsecurity?task=poll.vote&format=json
    24
    radio
    [{"id":"87","title":"Excellent, don't change a thing!","votes":"5","type":"x","order":"1","pct":55.56,"resources":[]},{"id":"88","title":"Should be more technical","votes":"3","type":"x","order":"2","pct":33.33,"resources":[]},{"id":"89","title":"Should include more HOWTOs","votes":"1","type":"x","order":"3","pct":11.11,"resources":[]}]["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"]["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"]350
    bottom200

    We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.