Bug 1105437 (CVE-2018-10844) - VUL-0: CVE-2018-10844: gnutls: HMAC-SHA-256 vulnerable to Lucky thirteen attack due to not enough dummy function calls
Summary: VUL-0: CVE-2018-10844: gnutls: HMAC-SHA-256 vulnerable to Lucky thirteen atta...
Status: RESOLVED FIXED
Alias: CVE-2018-10844
Product: SUSE Security Incidents
Classification: Novell Products
Component: Incidents (show other bugs)
Version: unspecified
Hardware: Other Other
: P3 - Medium : Normal
Target Milestone: ---
Assignee: Security Team bot
QA Contact: Security Team bot
URL: https://smash.suse.de/issue/213113/
Whiteboard: CVSSv3:RedHat:CVE-2018-10844:5.9:(AV:...
Keywords:
Depends on:
Blocks:
 
Reported: 2018-08-21 05:51 UTC by Marcus Meissner
Modified: 2024-04-08 13:50 UTC (History)
2 users (show)

See Also:
Found By: Security Response Team
Services Priority:
Business Priority:
Blocker: ---
Marketing QA Status: ---
IT Deployment: ---

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Description Marcus Meissner 2018-08-21 05:51:29 UTC 
rh#1582571

It was found that GnuTLS implementation of HMAC-SHA-256 was vulnerable to Lucky thirteen style attack due to the fact that not enough dummy compression function calls are added to cater for every situation.

References:
https://bugzilla.redhat.com/show_bug.cgi?id=1582571
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-10844
Comment 1 Marcus Meissner 2018-08-21 05:51:57 UTC 
paper
https://eprint.iacr.org/2018/747
Comment 5 Swamp Workflow Management 2018-09-24 13:13:56 UTC 
SUSE-SU-2018:2825-1: An update that fixes four vulnerabilities is now available.

Category: security (moderate)
Bug References: 1047002,1105437,1105459,1105460
CVE References: CVE-2017-10790,CVE-2018-10844,CVE-2018-10845,CVE-2018-10846
Sources used:
SUSE OpenStack Cloud 7 (src):    gnutls-3.2.15-18.6.1
SUSE Linux Enterprise Server for SAP 12-SP2 (src):    gnutls-3.2.15-18.6.1
SUSE Linux Enterprise Server for SAP 12-SP1 (src):    gnutls-3.2.15-18.6.1
SUSE Linux Enterprise Server 12-SP2-LTSS (src):    gnutls-3.2.15-18.6.1
SUSE Linux Enterprise Server 12-SP1-LTSS (src):    gnutls-3.2.15-18.6.1
SUSE Linux Enterprise Server 12-LTSS (src):    gnutls-3.2.15-18.6.1
SUSE Enterprise Storage 4 (src):    gnutls-3.2.15-18.6.1
Comment 6 Swamp Workflow Management 2018-09-24 16:15:08 UTC 
SUSE-SU-2018:2842-1: An update that fixes four vulnerabilities is now available.

Category: security (moderate)
Bug References: 1047002,1105437,1105459,1105460
CVE References: CVE-2017-10790,CVE-2018-10844,CVE-2018-10845,CVE-2018-10846
Sources used:
SUSE Linux Enterprise Software Development Kit 12-SP3 (src):    gnutls-3.3.27-3.3.1
SUSE Linux Enterprise Server 12-SP3 (src):    gnutls-3.3.27-3.3.1
SUSE Linux Enterprise Desktop 12-SP3 (src):    gnutls-3.3.27-3.3.1
Comment 7 Swamp Workflow Management 2018-09-25 13:12:04 UTC 
openSUSE-SU-2018:2854-1: An update that fixes four vulnerabilities is now available.

Category: security (moderate)
Bug References: 1047002,1105437,1105459,1105460
CVE References: CVE-2017-10790,CVE-2018-10844,CVE-2018-10845,CVE-2018-10846
Sources used:
openSUSE Leap 42.3 (src):    gnutls-3.3.27-2.3.1
Comment 8 Swamp Workflow Management 2018-09-28 10:13:31 UTC 
SUSE-SU-2018:2930-1: An update that fixes four vulnerabilities is now available.

Category: security (moderate)
Bug References: 1047002,1105437,1105459,1105460
CVE References: CVE-2017-10790,CVE-2018-10844,CVE-2018-10845,CVE-2018-10846
Sources used:
SUSE Linux Enterprise Module for Desktop Applications 15 (src):    gnutls-3.6.2-6.3.1
SUSE Linux Enterprise Module for Basesystem 15 (src):    gnutls-3.6.2-6.3.1
Comment 9 Swamp Workflow Management 2018-10-01 10:08:25 UTC 
openSUSE-SU-2018:2958-1: An update that fixes four vulnerabilities is now available.

Category: security (moderate)
Bug References: 1047002,1105437,1105459,1105460
CVE References: CVE-2017-10790,CVE-2018-10844,CVE-2018-10845,CVE-2018-10846
Sources used:
openSUSE Leap 15.0 (src):    gnutls-3.6.2-lp150.4.3.1
Comment 10 Marcus Meissner 2018-10-01 12:20:29 UTC 
released
Comment 12 Vítězslav Čížek 2018-10-02 15:04:19 UTC 
After a closer look, neither SLE-11 nor SLE-10 are vulnerable to this type of lucky-13 attack.

SLE-11's gnutls 2.4.1 supports TLS up to version 1.1 and it doesn't accept negotiating SHA-2 cipher suites.
That rules out bugs CVE-2018-10844 and CVE-2018-10845 which both require SHA256/SHA384 HMACs.

SLE-10 has gnutls 1.2.10 which doesn't implement SHA-2 at all.
Comment 13 Marcus Meissner 2018-10-02 15:53:16 UTC 
done
Comment 14 Swamp Workflow Management 2018-10-18 16:50:44 UTC 
SUSE-SU-2018:2825-2: An update that fixes four vulnerabilities is now available.

Category: security (moderate)
Bug References: 1047002,1105437,1105459,1105460
CVE References: CVE-2017-10790,CVE-2018-10844,CVE-2018-10845,CVE-2018-10846
Sources used:
SUSE Linux Enterprise Server 12-SP2-BCL (src):    gnutls-3.2.15-18.6.1