PT-2011-2040 · Microsoft · Windows Server 2003+3

Published 2011-02-10 · Updated 2019-02-26 · CVE-2011-0043

Positive Technologies (AI Summary)

CVSS v2.0

7.2

High

Base vector

AV:L/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Microsoft Windows XP versions SP2 through SP3 Microsoft Windows Server 2003 version SP2

Description The issue concerns a weakness in the Kerberos implementation, specifically its support for weak hashing algorithms. This weakness can be exploited by a local user to gain elevated privileges on the system by operating a service that sends crafted service tickets. The vulnerability is related to the ability to forge certain aspects of a Kerberos service ticket, potentially allowing a malicious user to obtain a token with elevated privileges.

Recommendations For Microsoft Windows XP versions SP2 through SP3, consider disabling the use of weak hashing algorithms in Kerberos until a patch is available. For Microsoft Windows Server 2003 version SP2, restrict access to services that utilize Kerberos authentication to minimize the risk of exploitation. As a temporary workaround, consider configuring the system to use stronger hashing mechanisms for Kerberos service tickets until a fix is applied.

Fix

Weakness Enumeration

CWE-310

Related Identifiers

CVE-2011-0043

Affected Products

Kerberos

Windows Server 2003

Windows Xp

Windows

References · 12

• https://docs.microsoft.com/en-us/security-updates/securitybulletins/2011/ms11-013 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2011-0043 · Security Note
• http://secunia.com/advisories/43251 · Vendor Advisory
• http://vupen.com/english/advisories/2011/0326 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0043 · Security Note
• https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12432 · Note
• http://osvdb.org/70834 · Note
• http://securityfocus.com/bid/46130 · Note
• http://securitytracker.com/id?1025048 · Note
• http://support.avaya.com/css/P8/documents/100127250 · Note
• https://docs.microsoft.com/security-updates/securitybulletins/2011/MS11-013 · Note
• https://exchange.xforce.ibmcloud.com/vulnerabilities/64900 · Note