openSUSE Security Update: Security update for libopenssl0_9_8
______________________________________________________________________________

Announcement ID: openSUSE-SU-2016:0640-1
Rating: important
References: #952871 #963415 #967787 #968046 #968048 #968374

Cross-References: CVE-2013-0166 CVE-2013-0169 CVE-2014-0076
CVE-2014-0195 CVE-2014-0221 CVE-2014-0224
CVE-2014-3470 CVE-2014-3505 CVE-2014-3506
CVE-2014-3507 CVE-2014-3508 CVE-2014-3510
CVE-2014-3566 CVE-2014-3567 CVE-2014-3568
CVE-2014-3569 CVE-2014-3570 CVE-2014-3571
CVE-2014-3572 CVE-2014-8275 CVE-2015-0204
CVE-2015-0209 CVE-2015-0286 CVE-2015-0287
CVE-2015-0288 CVE-2015-0289 CVE-2015-0293
CVE-2015-1788 CVE-2015-1789 CVE-2015-1790
CVE-2015-1791 CVE-2015-1792 CVE-2015-3195
CVE-2015-3197 CVE-2016-0797 CVE-2016-0799
CVE-2016-0800
Affected Products:
openSUSE Leap 42.1
openSUSE 13.2
______________________________________________________________________________

An update that fixes 37 vulnerabilities is now available.

Description:

This update for libopenssl0_9_8 fixes the following 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-2016-0797 (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.

– The package was updated to 0.9.8zh:
* fixes many security vulnerabilities (not seperately listed):
CVE-2015-3195, CVE-2015-1788, CVE-2015-1789, CVE-2015-1790,
CVE-2015-1792, CVE-2015-1791, CVE-2015-0286, CVE-2015-0287,
CVE-2015-0289, CVE-2015-0293, CVE-2015-0209, CVE-2015-0288,
CVE-2014-3571, CVE-2014-3569, CVE-2014-3572, CVE-2015-0204,
CVE-2014-8275, CVE-2014-3570, CVE-2014-3567, CVE-2014-3568,
CVE-2014-3566, CVE-2014-3510, CVE-2014-3507, CVE-2014-3506,
CVE-2014-3505, CVE-2014-3508, CVE-2014-0224, CVE-2014-0221,
CVE-2014-0195, CVE-2014-3470, CVE-2014-0076, CVE-2013-0169,
CVE-2013-0166

– avoid running OPENSSL_config twice. This avoids breaking engine loading.
(boo#952871, boo#967787)

– fix CVE-2015-3197 (boo#963415)
* SSLv2 doesn’t block disabled ciphers

Patch Instructions:

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

– openSUSE Leap 42.1:

zypper in -t patch openSUSE-2016-294=1

– openSUSE 13.2:

zypper in -t patch openSUSE-2016-294=1

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

Package List:

– openSUSE Leap 42.1 (i586 x86_64):

libopenssl0_9_8-0.9.8zh-14.1
libopenssl0_9_8-debuginfo-0.9.8zh-14.1
libopenssl0_9_8-debugsource-0.9.8zh-14.1

– openSUSE Leap 42.1 (x86_64):

libopenssl0_9_8-32bit-0.9.8zh-14.1
libopenssl0_9_8-debuginfo-32bit-0.9.8zh-14.1

– openSUSE 13.2 (i586 x86_64):

libopenssl0_9_8-0.9.8zh-9.3.1
libopenssl0_9_8-debuginfo-0.9.8zh-9.3.1
libopenssl0_9_8-debugsource-0.9.8zh-9.3.1

– openSUSE 13.2 (x86_64):

libopenssl0_9_8-32bit-0.9.8zh-9.3.1
libopenssl0_9_8-debuginfo-32bit-0.9.8zh-9.3.1

References:

https://www.suse.com/security/cve/CVE-2013-0166.html
https://www.suse.com/security/cve/CVE-2013-0169.html
https://www.suse.com/security/cve/CVE-2014-0076.html
https://www.suse.com/security/cve/CVE-2014-0195.html
https://www.suse.com/security/cve/CVE-2014-0221.html
https://www.suse.com/security/cve/CVE-2014-0224.html
https://www.suse.com/security/cve/CVE-2014-3470.html
https://www.suse.com/security/cve/CVE-2014-3505.html
https://www.suse.com/security/cve/CVE-2014-3506.html
https://www.suse.com/security/cve/CVE-2014-3507.html
https://www.suse.com/security/cve/CVE-2014-3508.html
https://www.suse.com/security/cve/CVE-2014-3510.html
https://www.suse.com/security/cve/CVE-2014-3566.html
https://www.suse.com/security/cve/CVE-2014-3567.html
https://www.suse.com/security/cve/CVE-2014-3568.html
https://www.suse.com/security/cve/CVE-2014-3569.html
https://www.suse.com/security/cve/CVE-2014-3570.html
https://www.suse.com/security/cve/CVE-2014-3571.html
https://www.suse.com/security/cve/CVE-2014-3572.html
https://www.suse.com/security/cve/CVE-2014-8275.html
https://www.suse.com/security/cve/CVE-2015-0204.html
https://www.suse.com/security/cve/CVE-2015-0209.html
https://www.suse.com/security/cve/CVE-2015-0286.html
https://www.suse.com/security/cve/CVE-2015-0287.html
https://www.suse.com/security/cve/CVE-2015-0288.html
https://www.suse.com/security/cve/CVE-2015-0289.html
https://www.suse.com/security/cve/CVE-2015-0293.html
https://www.suse.com/security/cve/CVE-2015-1788.html
https://www.suse.com/security/cve/CVE-2015-1789.html
https://www.suse.com/security/cve/CVE-2015-1790.html
https://www.suse.com/security/cve/CVE-2015-1791.html
https://www.suse.com/security/cve/CVE-2015-1792.html
https://www.suse.com/security/cve/CVE-2015-3195.html
https://www.suse.com/security/cve/CVE-2015-3197.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/952871
https://bugzilla.suse.com/963415
https://bugzilla.suse.com/967787
https://bugzilla.suse.com/968046
https://bugzilla.suse.com/968048
https://bugzilla.suse.com/968374

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