[security-announce] openSUSE-SU-2016:0640-1: important: Security update for libopenssl0_9_8

[news 28]

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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