4.3 - MS15-031

Executive Summary

Summary
Title	Vulnerability in Schannel Could Allow Security Feature Bypass (3046049)

Informations
Name	MS15-031	First vendor Publication	2015-03-10
Vendor	Microsoft	Last vendor Modification	2015-03-24
Severity (Vendor)	Important	Revision	1.1

Security-Database Scoring CVSS v3

Cvss vector : N/A
Overall CVSS Score	NA
Base Score	NA	Environmental Score	NA
impact SubScore	NA	Temporal Score	NA
Exploitabality Sub Score	NA

Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Cvss Base Score	4.3	Attack Range	Network
Cvss Impact Score	2.9	Attack Complexity	Medium
Cvss Expoit Score	8.6	Authentication	None Required
Calculate full CVSS 2.0 Vectors scores

Detail

Severity Rating: Important
Revision Note: V1.1 (March 24, 2015): Revised bulletin to add an FAQ directing customers to Microsoft Knowledge Base Article 3050509 for instructions on how to disable EXPORT ciphers after installing the update on Windows Server 2003 systems.
Summary: This security update resolves a vulnerability in Microsoft Windows that facilitates exploitation of the publicly disclosed FREAK technique, an industry-wide issue that is not specific to Windows operating systems. The vulnerability could allow a man-in-the-middle (MiTM) attacker to force the downgrading of the key length of an RSA key to EXPORT-grade length in a TLS connection. Any Windows system using Schannel to connect to a remote TLS server with an exploitable cipher suite is affected.

Original Source

Url : https://technet.microsoft.com/en-us/library/security/MS15-031

CWE : Common Weakness Enumeration

%	Id	Name
100 %	CWE-310	Cryptographic Issues

OVAL Definitions

Definition Id: oval:org.mitre.oval:def:28562

Oval ID:	oval:org.mitre.oval:def:28562
Title:	Vulnerability in Microsoft Schannel could allow security feature bypass - CVE-2015-1637 (MS15-031)
Description:	Schannel (aka Secure Channel) in Microsoft Windows Server 2003 SP2, Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows 7 SP1, Windows 8, Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT Gold and 8.1 does not properly restrict TLS state transitions, which makes it easier for remote attackers to conduct cipher-downgrade attacks to EXPORT_RSA ciphers via crafted TLS traffic, related to the "FREAK" issue, a different vulnerability than CVE-2015-0204 and CVE-2015-1067.
Family:	windows	Class:	vulnerability
Reference(s):	CVE-2015-1637	Version:	3
Platform(s):	Microsoft Windows Server 2003 Microsoft Windows Vista Microsoft Windows Server 2008 Microsoft Windows 7 Microsoft Windows Server 2008 R2 Microsoft Windows 8 Microsoft Windows 8.1 Microsoft Windows Server 2012 Microsoft Windows Server 2012 R2	Product(s):
Definition Synopsis:
Check for Windows Server 2003 x86/x64 and vulnerable file version Check for Windows Server 2003 x86/x64 or Windows XP x86 Microsoft Windows Server 2003 (x64) is installed AND Microsoft Windows Server 2003 (32-bit) is installed AND Microsoft Windows Server 2003 for Itanium is installed AND Check if the version of Schannel.dll is less than 5.2.3790.5564 OR Vista / 2k8 + vulnerable file version Vista / 2K8 Microsoft Windows Vista (32-bit) is installed AND Microsoft Windows Vista x64 Edition is installed AND Microsoft Windows Server 2008 (32-bit) is installed AND Microsoft Windows Server 2008 (64-bit) is installed AND Microsoft Windows Server 2008 (ia-64) is installed AND Check for LDR/GDR Check for LDR Check if the version of Schannel.dll is greater than or equal to 6.0.6002.23000 AND Check if the version of Schannel.dll is less than 6.0.6002.23640 AND Check if the version of Schannel.dll is less than 6.0.6002.19332 OR Win 7 / R2 + vulnerable file version Win 7 / R2 Microsoft Windows 7 (32-bit) is installed AND Microsoft Windows 7 x64 Edition is installed AND Microsoft Windows Server 2008 R2 x64 Edition is installed AND Microsoft Windows Server 2008 R2 Itanium-Based Edition is installed AND Check for LDR/GDR Check for LDR Check if the version of schannel.dll is greater than or equal to 6.1.7601.22000 AND Check if the version of Schannel.dll is less than 6.1.7601.22983 AND Check if the version of Schannel.dll is less than 6.1.7601.18779 OR Win 8/2k12 and vulnerable file version Win 8 / 2k12 Microsoft Windows 8 (x86) is installed AND Microsoft Windows 8 (x64) is installed AND Microsoft Windows Server 2012 (64-bit) is installed AND Check for vulnerable version Check for LDR Check if the version of Schannel.dll is greater than or equal to 6.2.9200.21000 AND Check if the version of Schannel.dll is less than 6.2.9200.21410 AND Check if the version of Schannel.dll is less than 6.2.9200.17293 OR Win 8.1 / 2K12 R2and vulnerable file version Win 8.1 / 2k12 R2 Microsoft Windows 8.1 (x86) is installed AND Microsoft Windows 8.1 (x64) is installed AND Microsoft Windows Server 2012 R2 is installed AND Check if the version of Schannel.dll is less than 6.3.9600.17702

CPE : Common Platform Enumeration

Type	Description	Count
Os	Microsoft Windows 7 cpe:2.3:o:microsoft:windows_7:-:sp1::::::	1
Os	Microsoft Windows 8 cpe:2.3:o:microsoft:windows_8:-:::::::*	1
Os	Microsoft Windows 8.1 cpe:2.3:o:microsoft:windows_8.1:-:::::::*	1
Os	Microsoft Windows Rt cpe:2.3:o:microsoft:windows_rt:-:::::::*	1
Os	Microsoft Windows Rt 8.1 cpe:2.3:o:microsoft:windows_rt_8.1:-:::::::*	1
Os	Microsoft Windows Server 2003 cpe:2.3:o:microsoft:windows_server_2003:-:sp2::::::	1
Os	Microsoft Windows Server 2008 cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:::::x64:* cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:::::itanium:* cpe:2.3:o:microsoft:windows_server_2008:-:sp2::::::	3
Os	Microsoft Windows Server 2012 cpe:2.3:o:microsoft:windows_server_2012:r2:::::::* cpe:2.3:o:microsoft:windows_server_2012:-:::::::*	2
Os	Microsoft Windows Vista cpe:2.3:o:microsoft:windows_vista:-:sp2::::::	1

Snort® IPS/IDS

Date	Description
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33806 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33805 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33804 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33803 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33802 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33801 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33800 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33799 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33798 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33797 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33796 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33795 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33794 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33793 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33792 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33791 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33790 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33789 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33788 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33787 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33786 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade cipher suite attempt RuleID : 33785 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33784 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33783 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33782 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33781 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33780 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL request for export grade ciphersuite attempt RuleID : 33779 - Revision : 5 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33778 - Revision : 6 - Type : SERVER-OTHER
2015-04-14	SSL export grade ciphersuite server negotiation attempt RuleID : 33777 - Revision : 6 - Type : SERVER-OTHER

Nessus® Vulnerability Scanner

Date	Description
2015-10-19	Name : The remote printer is affected by a security bypass vulnerability known as FR... File : lexmark_printer_TE701.nasl - Type : ACT_GATHER_INFO
2015-03-10	Name : The remote Windows host is affected by a security feature bypass vulnerability. File : smb_nt_ms15-031.nasl - Type : ACT_GATHER_INFO
2015-03-05	Name : The remote Windows host is affected by a security feature bypass vulnerability. File : smb_kb3046015.nasl - Type : ACT_GATHER_INFO

Alert History

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Date	Informations
2015-04-14 21:26:09	Multiple Updates
2015-03-27 13:33:13	Multiple Updates
2015-03-24 21:30:48	Multiple Updates
2015-03-24 21:16:21	Multiple Updates
2015-03-11 13:25:07	Multiple Updates
2015-03-10 21:27:54	Multiple Updates
2015-03-10 21:17:29	First insertion

Global Informations

Type	Count
CWE ID(s)	1
Oval ID(s)	1
CPE ID(s)	12
Snort® Rule(s)	30
Nessus® Exploit(s)	3

	Related
10	MS15-067
10	MS15-034
10	MS15-002
10	MS14-066
9.3	MS15-134
9.3	MS15-131
9.3	MS15-130
9.3	MS15-129
9.3	MS15-128
9.3	MS15-127
9.3	MS15-126
9.3	MS15-125
9.3	MS15-124
9.3	MS15-116
9.3	MS15-115
9.3	MS15-114
9.3	MS15-113
9.3	MS15-112
9.3	MS15-110
9.3	MS15-109
9.3	MS15-108
9.3	MS15-106
9.3	MS15-101
9.3	MS15-100
9.3	MS15-099
9.3	MS15-098
9.3	MS15-097
9.3	MS15-095
9.3	MS15-094
9.3	MS15-093
9.3	MS15-092
9.3	MS15-091
9.3	MS15-090
9.3	MS15-082
9.3	MS15-081
9.3	MS15-080
9.3	MS15-079
9.3	MS15-078
9.3	MS15-070
9.3	MS15-066
9.3	MS15-065
9.3	MS15-060
9.3	MS15-059
9.3	MS15-057
9.3	MS15-056
9.3	MS15-049
9.3	MS15-048
9.3	MS15-046
9.3	MS15-045
9.3	MS15-044
9.3	MS15-043
9.3	MS15-035
9.3	MS15-033
9.3	MS15-032
9.3	MS15-022
9.3	MS15-021
9.3	MS15-020
9.3	MS15-019
9.3	MS15-018
9.3	MS15-012
9.3	MS15-009
9.3	MS15-004
9	MS15-083
8.5	MS15-058
8.3	MS15-011
7.8	MS15-030
7.8	MS15-007
7.2	MS15-135
7.2	MS15-133
7.2	MS15-132
7.2	MS15-119
7.2	MS15-117
7.2	MS15-111
7.2	MS15-102
7.2	MS15-085
7.2	MS15-077
7.2	MS15-076
7.2	MS15-073
7.2	MS15-072
7.2	MS15-068
7.2	MS15-061
7.2	MS15-051
7.2	MS15-038
7.2	MS15-037
7.2	MS15-025
7.2	MS15-023
7.2	MS15-015
7.2	MS15-010
7.2	MS15-003
7.2	MS15-001
6.9	MS15-074
6.9	MS15-069
6.9	MS15-063
6.9	MS15-050
6.9	MS15-017
6.8	MS15-120
6.8	MS15-064
6.1	MS15-005
6	MS15-047
5.8	MS15-121
5.8	MS15-040
5	MS15-107
5	MS15-103
5	MS15-075
5	MS15-055
5	MS15-026
4.9	MS15-122
4.7	MS15-008
4.6	MS15-052
4.3	MS15-123
4.3	MS15-118
4.3	MS15-104
4.3	MS15-088
4.3	MS15-087
4.3	MS15-086
4.3	MS15-084
4.3	MS15-062
4.3	MS15-053
4.3	MS15-039
4.3	MS15-036
4.3	MS15-029
4.3	MS15-027
4.3	MS15-024
4.3	MS15-016
4.3	MS15-013
4.3	KB3046015
4.3	CVE-2015-1637
4	MS15-096
3.3	MS15-071
3.3	MS15-014
2.6	MS15-089
2.6	MS15-041
2.1	MS15-042
2.1	MS15-028
1.9	MS15-105
1.9	MS15-054
1.9	MS15-006
Info : listing not affected by your CVSS Env Score

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4.3 - MS15-031

Executive Summary

Security-Database Scoring CVSS v3

Security-Database Scoring CVSS v2

Detail

Original Source

CWE : Common Weakness Enumeration

OVAL Definitions

CPE : Common Platform Enumeration

Snort® IPS/IDS

Nessus® Vulnerability Scanner

Alert History

Global Informations

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