Vulnerability CVE-2015-6112 - CERT Civis.Net

Vulnerability Name:

CVE-2015-6112 (CCN-107605)

Assigned:

2015-11-10

Published:

2015-11-10

Updated:

2019-05-16

Summary:

SChannel in Microsoft 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 lacks the required extended master-secret binding support to ensure that a server's X.509 certificate is the same during renegotiation as it was before renegotiation, which allows man-in-the-middle attackers to obtain sensitive information or modify TLS session data via a "triple handshake attack," aka "Schannel TLS Triple Handshake Vulnerability."

CVSS v3 Severity:

8.3 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H)
7.2 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Adjacent Attack Complexity (AC): High Privileges Required (PR): None User Interaction (UI): None
Scope:	Scope (S): Changed
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

5.8 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): Partial Integrity (I): Partial Availibility (A): None

6.8 Medium (CCN CVSS v2 Vector: AV:A/AC:H/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Adjacent_Network Access Complexity (AC): High Athentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

Vulnerability Consequences:

Gain Access

References:

Source: MITRE
Type: CNA
CVE-2015-6112

Source: CCN
Type: Microsoft Security Bulletin MS15-121
Security Update to Schannel to Address Spoofing (3081320)

Source: CCN
Type: Microsoft Security Bulletin MS16-137
Security Update for Windows Authentication Methods (3199173)

Source: CCN
Type: Microsoft Security Bulletin MS16-149
Security Update for Windows (3205655)

Source: CCN
Type: Microsoft Security Bulletin MS17-004
Security Update for Local Security Authority Subsystem Service (3216771)

Source: SECTRACK
Type: Third Party Advisory, VDB Entry
1034124

Source: MS
Type: Patch, Vendor Advisory
MS15-121

Source: XF
Type: UNKNOWN
ms-schannel-cve20156112-spoofing(107605)

Vulnerable Configuration:

Configuration 1:

cpe:/o:microsoft:windows_7:-:sp1:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_8:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_8.1:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_rt:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*

OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_vista:-:sp2:*:*:*:*:*:*

Configuration CCN 1:

cpe:/o:microsoft:windows_vista:*:sp2:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_vista:*:sp2:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x32:*

OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2008:*:sp2:*:*:*:*:itanium:*

OR cpe:/o:microsoft:windows_7:-:sp1:-:*:-:-:x32:*

OR cpe:/o:microsoft:windows_7:*:sp1:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:itanium:*

OR cpe:/o:microsoft:windows_8:-:-:-:*:-:-:x32:*

OR cpe:/o:microsoft:windows_8:*:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2012:*:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_rt:-:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_8.1:-:-:-:*:-:-:x32:*

OR cpe:/o:microsoft:windows_8.1:*:*:*:*:*:*:x64:*

OR cpe:/o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*

OR cpe:/o:microsoft:windows_rt_8.1:*:*:*:*:*:*:*:*

Denotes that component is vulnerable