CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
8.7 | $5k-$25k | 0.00 |
A vulnerability was found in Microsoft Windows up to Vista (Operating System). It has been rated as very critical. This issue affects an unknown part of the component Schannel. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability.
The weakness was presented 11/11/2014 with Microsoft as MS14-066 as confirmed bulletin (Technet). It is possible to read the advisory at technet.microsoft.com. The identification of this vulnerability is CVE-2014-6321 since 09/11/2014. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/24/2022). The attack technique deployed by this issue is T1059 according to MITRE ATT&CK.
We expect the 0-day to have been worth approximately $100k and more. The vulnerability scanner Nessus provides a plugin with the ID 79127 (MS14-066: Vulnerability in Schannel Could Allow Remote Code Execution (2992611)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The security flaw can be detected with the following NASL code:
if ( # Windows 8.1 / Windows Server 2012 R2 hotfix_is_vulnerable(os:"6.3", sp:0, file:"Schannel.dll", version:"6.3.9600.17385", min_version:"6.3.9600.16000", dir:"\system32", bulletin:bulletin, kb:kb) || # Windows 8 / Windows Server 2012 hotfix_is_vulnerable(os:"6.2", sp:0, file:"Schannel.dll", version:"6.2.9200.21241", min_version:"6.2.9200.20000", dir:"\system32", bulletin:bulletin, kb:kb) || hotfix_is_vulnerable(os:"6.2", sp:0, file:"Schannel.dll", version:"6.2.9200.17124", min_version:"6.2.9200.16000", dir:"\system32", bulletin:bulletin, kb:kb) || # Windows 7 / Server 2008 R2 hotfix_is_vulnerable(os:"6.1", sp:1, file:"Schannel.dll", version:"6.1.7601.22814", min_version:"6.1.7601.22000", dir:"\system32", bulletin:bulletin, kb:kb) || hotfix_is_vulnerable(os:"6.1", sp:1, file:"Schannel.dll", version:"6.1.7601.18606", min_version:"6.1.7600.18000", dir:"\system32", bulletin:bulletin, kb:kb) || # Vista / Windows Server 2008 hotfix_is_vulnerable(os:"6.0", sp:2, file:"Schannel.dll", version:"6.0.6002.23555", min_version:"6.0.6002.23000", dir:"\system32", bulletin:bulletin, kb:kb) || hotfix_is_vulnerable(os:"6.0", sp:2, file:"Schannel.dll", version:"6.0.6002.19247", min_version:"6.0.6002.18000", dir:"\system32", bulletin:bulletin, kb:kb) || # Windows Server 2003 hotfix_is_vulnerable(os:"5.2", sp:2, file:"Schannel.dll", version:"5.2.3790.5462", dir:"\system32", bulletin:bulletin, kb:kb) )
Applying the patch MS14-066 is able to eliminate this problem. The bugfix is ready for download at technet.microsoft.com. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 16961.
The vulnerability is also documented in the databases at X-Force (98342) and Tenable (79127). See 68184 for similar entry.
Product
Type
Vendor
Name
Version
License
CPE 2.3
CPE 2.2
Video
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 10.0VulDB Meta Temp Score: 8.7
VulDB Base Score: 10.0
VulDB Temp Score: 8.7
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Code injectionCWE: CWE-94 / CWE-74 / CWE-707
ATT&CK: T1059
Local: No
Remote: Yes
Availability: 🔍
Status: Unproven
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 79127
Nessus Name: MS14-066: Vulnerability in Schannel Could Allow Remote Code Execution (2992611)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Patch: MS14-066
TippingPoint: 🔍
McAfee IPS: 🔍
McAfee IPS Version: 🔍
ISS Proventia IPS: 🔍
Fortigate IPS: 🔍
Timeline
09/11/2014 🔍11/11/2014 🔍
11/11/2014 🔍
11/11/2014 🔍
11/11/2014 🔍
11/11/2014 🔍
11/11/2014 🔍
11/12/2014 🔍
11/12/2014 🔍
02/24/2022 🔍
Sources
Vendor: microsoft.comProduct: microsoft.com
Advisory: MS14-066
Organization: Microsoft
Status: Confirmed
CVE: CVE-2014-6321 (🔍)
OVAL: 🔍
X-Force: 98342 - Microsoft Secure Channel code execution, High Risk
SecurityTracker: 1031186 - Windows Schannel Unspecified Flaw Lets Remote Users Execute Arbitrary Code
Vulnerability Center: 46988 - [MS14-066] Microsoft Schannel Security Package Remote Code Execution Vulnerability, Critical
SecurityFocus: 70954 - Microsoft Secure Channel CVE-2014-6321 Remote Code Execution Vulnerability
Secunia: 59800
scip Labs: https://www.scip.ch/en/?labs.20140213
See also: 🔍
Entry
Created: 11/12/2014 17:16Updated: 02/24/2022 15:17
Changes: 11/12/2014 17:16 (81), 08/19/2018 20:04 (9), 02/24/2022 15:11 (3), 02/24/2022 15:17 (1)
Complete: 🔍
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