Debian: DSA-3566-1: openssl security update

    Date03 May 2016
    CategoryDebian
    40
    Posted ByLinuxSecurity Advisories
    Several vulnerabilities were discovered in OpenSSL, a Secure Socket Layer toolkit. CVE-2016-2105
    
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    Debian Security Advisory DSA-3566-1                   This email address is being protected from spambots. You need JavaScript enabled to view it.
    https://www.debian.org/security/                       Alessandro Ghedini
    May 03, 2016                          https://www.debian.org/security/faq
    - -------------------------------------------------------------------------
    
    Package        : openssl
    CVE ID         : CVE-2016-2105 CVE-2016-2106 CVE-2016-2107 CVE-2016-2108 
                     CVE-2016-2109 CVE-2016-2176
    
    Several vulnerabilities were discovered in OpenSSL, a Secure Socket Layer
    toolkit.
    
    CVE-2016-2105
    
        Guido Vranken discovered that an overflow can occur in the function
        EVP_EncodeUpdate(), used for Base64 encoding, if an attacker can
        supply a large amount of data. This could lead to a heap corruption.
    
    CVE-2016-2106
    
        Guido Vranken discovered that an overflow can occur in the function
        EVP_EncryptUpdate() if an attacker can supply a large amount of data.
        This could lead to a heap corruption.
    
    CVE-2016-2107
    
        Juraj Somorovsky discovered a padding oracle in the AES CBC cipher
        implementation based on the AES-NI instruction set. This could allow
        an attacker to decrypt TLS traffic encrypted with one of the cipher
        suites based on AES CBC.
    
    CVE-2016-2108
    
        David Benjamin from Google discovered that two separate bugs in the
        ASN.1 encoder, related to handling of negative zero integer values
        and large universal tags, could lead to an out-of-bounds write.
    
    CVE-2016-2109
    
        Brian Carpenter discovered that when ASN.1 data is read from a BIO
        using functions such as d2i_CMS_bio(), a short invalid encoding can
        casuse allocation of large amounts of memory potentially consuming
        excessive resources or exhausting memory.
    
    CVE-2016-2176
    
        Guido Vranken discovered that ASN.1 Strings that are over 1024 bytes
        can cause an overread in applications using the X509_NAME_oneline()
        function on EBCDIC systems. This could result in arbitrary stack data
        being returned in the buffer.
    
    Additional information about these issues can be found in the OpenSSL
    security advisory at https://www.openssl.org/news/secadv/20160503.txt
    
    For the stable distribution (jessie), these problems have been fixed in
    version 1.0.1k-3+deb8u5.
    
    For the unstable distribution (sid), these problems have been fixed in
    version 1.0.2h-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: 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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