Click any highlighted term for further explanation. For more information, contact technical support.
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Details
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Vulnerability name/brief description
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MS12-083 - Vulnerability in IP-HTTPS Component Could Allow Security Feature Bypass (2765809)
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CVE/CAN name
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Vendor threat level
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Important
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SophosLabs threat level
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low
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Solution
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MS12-083
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Vendor description
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This security update resolves a privately reported vulnerability in Microsoft Windows. The vulnerability could allow security feature bypass if an attacker presents a revoked certificate to an IP-HTTPS server commonly used in Microsoft DirectAccess deployments. To exploit the vulnerability, an attacker must use a certificate issued from the domain for IP-HTTPS server authentication. Logging on to a system inside the organization would still require system or domain credentials.
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SophosLabs comments
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This vulnerability arises due to the fact that Windows fails to properly check the validity of certificates. IP over HTTPS (IP-HTTPS) is a protocol that allows secure IP tunnels to be established using secure HTTP connections and is commonly used in Microsoft DirectAccess deployments.
As this vulnerability is privately reported through responsible disclosure channels, the severity of the impact arising from exploits using this vulnerability is largely mitigated.
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SophosLabs testing result
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No SophosLabs testing result found
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Currently known exploits
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No currently known exploits found
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First sample seen
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No samples found
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Discovery date
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11 Dec 2012
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Affected software
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Windows Server 2008 R2 for x64-based Systems
Windows Server 2008 R2 for x64-based Systems Service Pack 1
Windows Server 2008 R2 for Itanium-based Systems
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1
Windows Server 2012
Windows Server 2008 R2 for x64-based Systems (Server Core installation)
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
Windows Server 2012 (Server Core installation)
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References
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Credits
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Revisions
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-
December 11, 2012 - Initial analysis written
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Explanation of terms
Vulnerability Name/Brief Description:
Vendor identifier plus a brief description of the type of attack.
CVE/CAN Name:
Currently assigned CVE name. If a CVE name doesn't exist the CAN name will be used until a CVE has been assigned.
Vendor Threat Level:
Threat level assigned by the vendor
SophosLabs Threat Level:
Threat level assigned by SophosLabs
- LOW RISK - There is little chance of this vulnerability being actively exploited by malware.
- MEDIUM RISK - There is a possibility of this vulnerability being actively exploited by malware.
- HIGH RISK - There is a strong possibility of this vulnerability being actively exploited by malware.
- CRITICAL RISK - This vulnerability will almost certainly be actively exploited by malware.
Solution:
Vendor-supplied Patch identifier and recommended solution, or workaround if applicable.
Vendor Description:
Summary of the cause and potential effect of the vulnerability provided by the vendor.
SophosLabs Comments:
SophosLabs' opinions and observations of the vulnerability in question.
SophosLabs Testing Result:
Details of completed lab testing, if applicable. Please note that the lab test environment may differ significantly from user environments.
Currently Known Exploits:
List of identities for known exploits, if applicable.
First Sample Seen:
Date of the first sample seen by SophosLabs.
Discovery Date:
Date of the earliest known publically disclosed advisory.
Affected Software:
Vulnerable platforms and software versions.