MS KB2661254: Update For Minimum Certificate Key Length

Medium Nessus Plugin ID 62466


The remote Windows host is configured to trust SSL/TLS certificates with weak keys.


The remote host is missing Microsoft KB2661254. This update restricts the use of RSA keys less than 1024 bits in length. Keys of shorter lengths are more susceptible to brute-force attacks, which could allow a man-in-the-middle attacker to intercept and/or modify data encrypted over SSL/TLS.


Microsoft has released a set of patches for Windows XP, 2003, Vista, 2008, 7, and 2008 R2.

Please note this update could cause applications or services (e.g., email, signed applications, private PKI) to stop working in some environments. Refer to the Microsoft advisory for more information.

See Also

Plugin Details

Severity: Medium

ID: 62466

File Name: smb_kb2661254.nasl

Version: $Revision: 1.4 $

Type: local

Agent: windows

Family: Windows

Published: 2012/10/10

Modified: 2017/08/30

Dependencies: 13855

Risk Information

Risk Factor: Medium


Base Score: 5.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:N

Vulnerability Information

CPE: cpe:/o:microsoft:windows

Required KB Items: SMB/Registry/Enumerated, SMB/WindowsVersion

Patch Publication Date: 2012/08/14

Reference Information

MSKB: 2661254