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openSUSE Security Update : libopenssl0_9_8 (openSUSE-2016-294) (DROWN) (FREAK) (POODLE)

critical Nessus Plugin ID 89651

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Synopsis

The remote openSUSE host is missing a security update.

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 separately 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

Solution

Update the affected libopenssl0_9_8 packages.

See Also

https://bugzilla.opensuse.org/show_bug.cgi?id=952871

https://bugzilla.opensuse.org/show_bug.cgi?id=963415

https://bugzilla.opensuse.org/show_bug.cgi?id=967787

https://bugzilla.opensuse.org/show_bug.cgi?id=968046

https://bugzilla.opensuse.org/show_bug.cgi?id=968048

https://bugzilla.opensuse.org/show_bug.cgi?id=968374

Plugin Details

Severity: Critical

ID: 89651

File Name: openSUSE-2016-294.nasl

Version: 1.22

Type: local

Agent: unix

Published: 3/4/2016

Updated: 12/5/2022

Supported Sensors: Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 8.3

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 9.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:novell:opensuse:13.2, p-cpe:/a:novell:opensuse:libopenssl0_9_8, p-cpe:/a:novell:opensuse:libopenssl0_9_8-debuginfo-32bit, p-cpe:/a:novell:opensuse:libopenssl0_9_8-debuginfo, p-cpe:/a:novell:opensuse:libopenssl0_9_8-debugsource, cpe:/o:novell:opensuse:42.1, p-cpe:/a:novell:opensuse:libopenssl0_9_8-32bit

Required KB Items: Host/local_checks_enabled, Host/SuSE/release, Host/SuSE/rpm-list, Host/cpu

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 3/3/2016

Exploitable With

Core Impact

Reference Information

CVE: 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