SkipNavigation
Home | FAQ | Contact | Privacy Policy
US-CERT
American Flag
  Vulnerability
Notes
Database

Search Vulnerability Notes

Vulnerability Notes Help Information


 
 View Notes By
  Name

ID Number

CVE Name

Date Public

Date Published

Date Updated

Severity Metric
 Other Documents
  Technical Alerts

Technical Bulletins

Alerts

Security Tips
 

Vulnerability Note VU#758054

Reflection for Secure IT Windows Server 6.0 changed case sensitivity of allow and deny lists

Overview

Reflection for Secure IT Windows Server version 6.0 uses different case-sensitivity in evaluating the allow and deny lists as previous versions, potentionally allowing unintended access.

I. Description

Reflection for Secure IT Windows Server version 6.0, an SSH server from WRQ formerly known as F-Secure SSH server, provides allow and deny lists of regular expressions to configure the set of accounts that should be able to access the host. Prior to 6.0, these regular expressions were evaluated in a case-insensitive manner. In 6.0, the regular expressions are evaluated in a case-sensitive manner, potentionally allowing an attacker to login to previously-denied accounts.

II. Impact

A remote attacker may be able to login to previously-denied accounts, if the attacker can authenticate to the account (e.g., he knows the account's password).

III. Solution

Upgrade

According to WRQ, version 6.0, build 24 of Reflection for Secure IT Windows Server evaluates allow and deny strings in a case-insensitive manner. This restores the prior behavior, but may result in usernames matching the allow list that did not match in prior builds of version 6.0.

Manually Create Expressions

Enter regular expressions that match all case-combinations of the desired strings.

Systems Affected

VendorStatusDate NotifiedDate Updated
F-Secure CorporationNot Vulnerable28-Jul-2005
WRQ, Inc.Vulnerable30-Aug-2005

References


http://support.wrq.com/techdocs/1910.html

Credit

Thanks to WRQ for reporting this issue.

This document was written by Hal Burch.

Other Information

Date Public:2005-08-25
Date First Published:2005-08-31
Date Last Updated:2005-09-01
CERT Advisory: 
CVE-ID(s): 
NVD-ID(s): 
US-CERT Technical Alerts: 
Metric:1.01
Document Revision:22

If you have feedback, comments, or additional information about this vulnerability, please send us email.
 

 
Page Corner Image
Produced 2005 by US-CERT, a government organization
Disclaimers and copyright information
Get Adobe Reader Get Adobe Reader