SUSE Security Update: Security update for sles12sp1-docker-image
______________________________________________________________________________

Announcement ID:    SUSE-SU-2016:0748-1
Rating:             important
References:         #969591 
Cross-References:   CVE-2014-9761 CVE-2015-3197 CVE-2015-7547
                    CVE-2015-8776 CVE-2015-8777 CVE-2015-8778
                    CVE-2015-8779 CVE-2016-0702 CVE-2016-0703
                    CVE-2016-0704 CVE-2016-0705 CVE-2016-0797
                    CVE-2016-0798 CVE-2016-0799 CVE-2016-0800
                   
Affected Products:
                    SUSE Linux Enterprise Module for Containers 12
______________________________________________________________________________

   An update that fixes 15 vulnerabilities is now available.

Description:


   This update for sles12sp1-docker-image fixes the following issues:

   glibc fixed the following security issues:

   - CVE-2015-7547: A stack-based buffer overflow in getaddrinfo allowed
     remote attackers to cause a crash or execute arbitrary code via crafted
     and timed DNS responses (bsc#961721)
   - CVE-2015-8777: Insufficient checking of LD_POINTER_GUARD environment
     variable allowed local attackers to bypass the pointer guarding
     protection of the dynamic loader on set-user-ID and set-group-ID
     programs (bsc#950944)
   - CVE-2015-8776: Out-of-range time values passed to the strftime function
     may cause it to crash, leading to a denial of service, or potentially
     disclosure information (bsc#962736)
   - CVE-2015-8778: Integer overflow in hcreate and hcreate_r could have
     caused an out-of-bound memory access. leading to application crashes or,
     potentially, arbitrary code execution (bsc#962737)
   - CVE-2014-9761: A stack overflow (unbounded alloca) could have caused
     applications which process long strings with the nan function to crash
     or, potentially, execute arbitrary code. (bsc#962738)
   - CVE-2015-8779: A stack overflow (unbounded alloca) in the catopen
     function could have caused applications which pass long strings to the
     catopen function to crash or, potentially execute arbitrary code.
     (bsc#962739)

   glibc received the following non-security bugfixes:

   - bsc#955647: Resource leak in resolver
   - bsc#956716: Don't do lock elision on an error checking mutex
   - bsc#958315: Reinitialize dl_load_write_lock on fork

   openssl fixed the following security issues:
   - CVE-2016-0800 aka the "DROWN" attack (bsc#968046): OpenSSL was
     vulnerable to a cross-protocol attack that could lead to decryption of
     TLS sessions by using a server supporting SSLv2 and EXPORT cipher suites
     as a Bleichenbacher RSA padding oracle.

     This update changes the openssl library to:

     * Disable SSLv2 protocol support by default.

       This can be overridden by setting the environment variable
   "OPENSSL_ALLOW_SSL2" or by using SSL_CTX_clear_options using the
   SSL_OP_NO_SSLv2 flag.

       Note that various services and clients had already disabled SSL
   protocol 2 by default previously.

     * Disable all weak EXPORT ciphers by default. These can be reenabled if
       required by old legacy software using the environment variable
       "OPENSSL_ALLOW_EXPORT".

   - CVE-2016-0702 aka the "CacheBleed" attack. (bsc#968050) Various
 changes
     in the modular exponentation code were added that make sure that it is
     not possible to recover RSA secret keys by analyzing cache-bank
     conflicts on the Intel Sandy-Bridge microarchitecture.

     Note that this was only exploitable if the malicious code was running
     on the same hyper threaded Intel Sandy Bridge processor as the victim
      thread performing decryptions.

   - CVE-2016-0705 (bnc#968047): A double free() bug in the DSA ASN1 parser
     code was fixed that could be abused to facilitate a denial-of-service
     attack.

   - CVE-2016-0797 (bnc#968048): The BN_hex2bn() and BN_dec2bn() functions
     had a bug that could result in an attempt to de-reference a NULL pointer
     leading to crashes. This could have security consequences if these
     functions were ever called by user applications with large untrusted
     hex/decimal data. Also, internal usage of these functions in OpenSSL
     uses data from config files
     or application command line arguments. If user developed applications
      generated config file data based on untrusted data, then this could
      have had security consequences as well.

   - CVE-2016-0798 (bnc#968265) The SRP user database lookup method
     SRP_VBASE_get_by_user() had a memory leak that attackers could abuse to
     facility DoS attacks. To mitigate the issue, the seed handling in
     SRP_VBASE_get_by_user() was disabled


   - CVE-2016-0799 (bnc#968374) On many 64 bit systems, the internal fmtstr()
     and doapr_outch() functions could miscalculate the length of a string
     and attempt to access out-of-bounds memory locations. These problems
     could have enabled attacks where large amounts of untrusted data is
     passed to the BIO_*printf functions. If applications use these functions
     in this way then they could have been vulnerable. OpenSSL itself uses
     these functions when printing out human-readable dumps of ASN.1 data.
     Therefore applications that print this data could have been vulnerable
     if the data is from untrusted sources. OpenSSL command line applications
     could also have been vulnerable when they print out ASN.1 data, or if
     untrusted data is passed as command line arguments. Libssl is not
     considered directly vulnerable.

   - CVE-2015-3197 (bsc#963415): The SSLv2 protocol did not block disabled
     ciphers.


   Note that the March 1st 2016 release also references following CVEs that
   were fixed by us with CVE-2015-0293 in 2015:

   - CVE-2016-0703 (bsc#968051): This issue only affected versions of OpenSSL
     prior to March 19th 2015 at which time the code was refactored to
     address vulnerability CVE-2015-0293. It would have made the above
     "DROWN" attack much easier.
   - CVE-2016-0704 (bsc#968053): "Bleichenbacher oracle in SSLv2" This
 issue
     only affected versions of OpenSSL prior to March 19th 2015 at which time
     the code was refactored to address vulnerability CVE-2015-0293. It would
     have made the above "DROWN" attack much easier.

   openssl received the following non-security bugfixes:
   - Avoid running OPENSSL_config twice. This avoids breaking engine loading.
     (bsc#952871)
   - Ensure that OpenSSL doesn't fall back to the default digest algorithm
     (SHA1) in case a non-FIPS algorithm was negotiated while running in FIPS
     mode. Instead, OpenSSL will refuse the digest. (bnc#958501)


Patch Instructions:

   To install this SUSE Security Update use YaST online_update.
   Alternatively you can run the command listed for your product:

   - SUSE Linux Enterprise Module for Containers 12:

      zypper in -t patch SUSE-SLE-Module-Containers-12-2016-440=1

   To bring your system up-to-date, use "zypper patch".


Package List:

   - SUSE Linux Enterprise Module for Containers 12 (ppc64le):

      sles12sp1-docker-image-1.0.4-20160308171022

   - SUSE Linux Enterprise Module for Containers 12 (x86_64):

      sles12sp1-docker-image-1.0.4-20160308170633

   - SUSE Linux Enterprise Module for Containers 12 (s390x):

      sles12sp1-docker-image-1.0.4-20160308170749


References:

   https://www.suse.com/security/cve/CVE-2014-9761.html
   https://www.suse.com/security/cve/CVE-2015-3197.html
   https://www.suse.com/security/cve/CVE-2015-7547.html
   https://www.suse.com/security/cve/CVE-2015-8776.html
   https://www.suse.com/security/cve/CVE-2015-8777.html
   https://www.suse.com/security/cve/CVE-2015-8778.html
   https://www.suse.com/security/cve/CVE-2015-8779.html
   https://www.suse.com/security/cve/CVE-2016-0702.html
   https://www.suse.com/security/cve/CVE-2016-0703.html
   https://www.suse.com/security/cve/CVE-2016-0704.html
   https://www.suse.com/security/cve/CVE-2016-0705.html
   https://www.suse.com/security/cve/CVE-2016-0797.html
   https://www.suse.com/security/cve/CVE-2016-0798.html
   https://www.suse.com/security/cve/CVE-2016-0799.html
   https://www.suse.com/security/cve/CVE-2016-0800.html
   https://bugzilla.suse.com/969591

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