SUSE Security Update: Security update for sles11sp4-docker-image
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Announcement ID: SUSE-SU-2016:0778-1
Rating: important
References: #969591
Cross-References: CVE-2014-9761 CVE-2015-3197 CVE-2015-6908
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-2016-0755 CVE-2016-0797 CVE-2016-0799
CVE-2016-0800
Affected Products:
SUSE Linux Enterprise Module for Containers 12
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An update that fixes 16 vulnerabilities is now available.
Description:
This rebuild for sles11sp4-docker-image fixes several important security
issues done in libraries contained inside, for glibc, openssl, curl and
openldap2.
glibc security fixes:
– 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 non-security bugfixes:
– bsc#930721: Accept leading and trailing spaces in getdate input string
– bsc#942317: Recognize power8 platform
– bsc#950944: Always enable pointer guard
– bsc#956988: Fix deadlock in __dl_iterate_phdr
openssl 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
“OPENSSL_ALLOW_EXPORT”.
– 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-2016-0799 (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 non-security bugs fixed:
– Avoid running OPENSSL_config twice. This avoids breaking engine loading
and also fixes a memory leak in libssl. (bsc#952871 bsc#967787)
curl security issues fixed:
– CVE-2016-0755: libcurl would reuse NTLM-authenticated proxy connections
without properly making sure that the connection was authenticated with
the same credentials as set for this transfer (bsc#962983)
curl non-security bugs fixed:
– bsc#926511: Check for errors on the control connection during FTP
transfers
openldap2 security issue fixed:
– CVE-2015-6908. Passing a crafted packet to the function ber_get_next(),
an attacker may cause a remote denial of service, crashing the OpenLDAP
server (bsc#945582).
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-12-2016-457=1
To bring your system up-to-date, use “zypper patch”.
Package List:
– SUSE Linux Enterprise Module for Containers 12 (x86_64):
sles11sp4-docker-image-1.1.1-20160304104123
– SUSE Linux Enterprise Module for Containers 12 (s390x):
sles11sp4-docker-image-1.1.1-20160304104143
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-2015-6908.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-2016-0755.html
https://www.suse.com/security/cve/CVE-2016-0797.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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