Executive Summary
| Summary | |
|---|---|
| Title | Vulnerabilities in Kerberos Could Allow Elevation of Privilege (2496930) |
| Informations | |||
|---|---|---|---|
| Name | MS11-013 | First vendor Publication | 2011-02-08 |
| Vendor | Microsoft | Last vendor Modification | 2011-03-16 |
| Severity (Vendor) | Important | Revision | 2.0 |
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:L/AC:L/Au:N/C:C/I:C/A:C) | |||
|---|---|---|---|
| Cvss Base Score | 7.2 | Attack Range | Local |
| Cvss Impact Score | 10 | Attack Complexity | Low |
| Cvss Expoit Score | 3.9 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| Revision Note: V2.0 (March 16, 2011): Clarified the Affected Software to include Windows 7 for 32-bit Systems Service Pack 1, Windows 7 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1, and Windows Server 2008 R2 for Itanium-based Systems Service Pack 1. See the entry to the section, Frequently Asked Questions (FAQ) Related to This Security Update, that explains this revision.Summary: This security update resolves one privately reported vulnerability and one publicly disclosed vulnerability in Microsoft Windows. The more severe of these vulnerabilities could allow elevation of privilege if a local, authenticated attacker installs a malicious service on a domain-joined computer. |
Original Source
| Url : http://www.microsoft.com/technet/security/bulletin/MS11-013.mspx |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|---|---|
| 50 % | CWE-310 | Cryptographic Issues |
| 50 % | CWE-287 | Improper Authentication |
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:12432 | |||
| Oval ID: | oval:org.mitre.oval:def:12432 | ||
| Title: | Kerberos Unkeyed Checksum Vulnerability | ||
| Description: | Kerberos in Microsoft Windows XP SP2 and SP3 and Server 2003 SP2 supports weak hashing algorithms, which allows local users to gain privileges by operating a service that sends crafted service tickets, as demonstrated by the CRC32 algorithm, aka "Kerberos Unkeyed Checksum Vulnerability." | ||
| Family: | windows | Class: | vulnerability |
| Reference(s): | CVE-2011-0043 | Version: | 6 |
| Platform(s): | Microsoft Windows XP Microsoft Windows Server 2003 | Product(s): | |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:12498 | |||
| Oval ID: | oval:org.mitre.oval:def:12498 | ||
| Title: | Kerberos Spoofing Vulnerability | ||
| Description: | Kerberos in Microsoft Windows Server 2008 R2 and Windows 7 does not prevent a session from changing from strong encryption to DES encryption, which allows man-in-the-middle attackers to spoof network traffic and obtain sensitive information via a DES downgrade, aka "Kerberos Spoofing Vulnerability." | ||
| Family: | windows | Class: | vulnerability |
| Reference(s): | CVE-2011-0091 | Version: | 7 |
| Platform(s): | Microsoft Windows 7 Microsoft Windows Server 2008 Microsoft Windows Server 2008 R2 | Product(s): | |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
| Type | Description | Count |
|---|---|---|
| Os | 2 | |
| Os | 1 | |
| Os | 1 | |
| Os | 2 | |
| Os | 2 |
OpenVAS Exploits
| Date | Description |
|---|---|
| 2011-02-09 | Name : Microsoft Kerberos Privilege Escalation Vulnerabilities (2496930) File : nvt/secpod_ms11-013.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 70835 | Microsoft Windows Kerberos Authentication Downgrade Weakness Microsoft Windows contains a flaw related to the implementation of Kerberos. The issue is triggered when a man-in-the-middle attacker downgrades the Kerberos authentication to use DES. This may allow an attacker to impersonate a legitimate users' credentials. |
| 70834 | Microsoft Windows Kerberos Unkeyed Checksum Hashing Mechanism Service Ticket ... Microsoft Windows' implementation of Kerberos contains a flaw that may allow an attacker to gain access to unauthorized privileges. The issue is triggered when Kerberos supports a weak hashing mechanism, allowing a local authenticated attacker to forge certain aspects of a Kerberos service ticket. This may allow the attacker to gain a token with elevated privileges. |
Information Assurance Vulnerability Management (IAVM)
| Date | Description |
|---|---|
| 2011-02-10 | IAVM : 2011-A-0021 - Multiple Vulnerabilities in Microsoft Windows Kerberos Severity : Category II - VMSKEY : V0026067 |
Snort® IPS/IDS
| Date | Description |
|---|---|
| 2014-01-10 | Microsoft Windows Kerberos auth downgrade to DES MITM attempt RuleID : 18414 - Revision : 9 - Type : OS-WINDOWS |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2011-02-08 | Name : The remote implementation of Kerberos is affected by one or more vulnerabilit... File : smb_nt_ms11-013.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2016-04-26 23:02:54 |
|
| 2014-02-17 11:46:52 |
|
| 2014-01-19 21:30:37 |
|
| 2013-11-11 12:41:21 |
|
| 2013-05-11 00:49:47 |
|
