SUSE-SU-2016:0786-1: important: Security update for sles12-docker-image

sle-security-updates at sle-security-updates at
Wed Mar 16 08:28:50 MDT 2016

   SUSE Security Update: Security update for sles12-docker-image

Announcement ID:    SUSE-SU-2016:0786-1
Rating:             important
References:         #969591 
Cross-References:   CVE-2014-9761 CVE-2015-1819 CVE-2015-3194
                    CVE-2015-3195 CVE-2015-3196 CVE-2015-3197
                    CVE-2015-5312 CVE-2015-7497 CVE-2015-7498
                    CVE-2015-7499 CVE-2015-7500 CVE-2015-7547
                    CVE-2015-7941 CVE-2015-7942 CVE-2015-8035
                    CVE-2015-8241 CVE-2015-8242 CVE-2015-8317
                    CVE-2015-8710 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
Affected Products:
                    SUSE Linux Enterprise Module for Containers 12

   An update that fixes 31 vulnerabilities is now available.


   This update for sles12-docker-image fixes issues with binaries and
   libraries included in the image where security updates have been made
   available in the last weeks.

   glibc security issues fixed:
   - 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.

   glibc bugs fixed:
   - 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 security bugs fixed: Security issues fixed:
   - 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

   - 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

   - 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 even if the user has configured a
     seed. Applications are advised to migrate to SRP_VBASE_get1_by_user().

   - 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

   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.

   - CVE-2015-3194: The signature verification routines will crash with a
     NULL pointer dereference if presented with an ASN.1 signature using the
     RSA PSS algorithm and absent mask generation function parameter. Since
     these routines are used to verify certificate signature algorithms this
     can be used to crash any certificate verification operation and
     exploited in a DoS attack. Any application which performs certificate
     verification is vulnerable including OpenSSL clients and servers which
     enable client authentication. (bsc#957815)
   - CVE-2015-3195: When presented with a malformed X509_ATTRIBUTE structure
     OpenSSL would leak memory. This structure is used by the PKCS#7 and CMS
     routines so any application which reads PKCS#7 or CMS data from
     untrusted sources is affected. SSL/TLS is not affected. (bsc#957812)
   - CVE-2015-3196: If PSK identity hints are received by a multi-threaded
     client then the values were wrongly updated in the parent SSL_CTX
     structure. This could result in a race condition potentially leading to
     a double free of the identify hint data.  (bsc#957813)

   openssl bugs fixed:
   - Avoid running OPENSSL_config twice. This avoids breaking engine loading.
   - 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)
   - Clear the error after setting non-fips mode (bsc#947104)
   - Improve S/390 performance on IBM z196 and z13 (bsc#954256)
   - Add support for "ciphers" providing no encryption (bsc#937085)

   libxml2 security issues fixed:
   - CVE-2015-8710: Parsing short unclosed HTML comment could cause
     uninitialized memory access, which allowed remote attackers to read
     contents from previous HTTP requests depending on the application
   - CVE-2015-1819 Enforce the reader to run in constant memory [bnc#928193]
   - CVE-2015-7941 Fix out of bound read with crafted xml input by stopping
     parsing on entities boundaries errors [bnc#951734]
   - CVE-2015-7942 Fix another variation of overflow in Conditional sections
   - CVE-2015-8241 Avoid extra processing of MarkupDecl when EOF [bnc#956018]
   - CVE-2015-8242 Buffer overead with HTML parser in push mode [bnc#956021]
   - CVE-2015-8317 Return if the encoding declaration is broken or encoding
     conversion failed [bnc#956260]
   - CVE-2015-5312 Fix another entity expansion issue [bnc#957105]
   - CVE-2015-7497 Avoid an heap buffer overflow in xmlDictComputeFastQKey
   - CVE-2015-7498 Processes entities after encoding conversion failures
   - CVE-2015-7499 Add xmlHaltParser() to stop the parser / Detect
     incoherency on GROW [bnc#957109]
   - CVE-2015-8317 Multiple out-of-bound read could lead to denial of service
   - CVE-2015-8035 DoS when parsing specially crafted XML document if XZ
     support is enabled [bnc#954429]
   - CVE-2015-7500 Fix memory access error due to incorrect entities
     boundaries [bnc#957110]

   And other security and non-security updates found in the SUSE Linux
   Enterprise 12 GA line.

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-12-2016-459=1

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

Package List:

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


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


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



More information about the sle-security-updates mailing list