Nessus Scan & weak ciphers

dschelberg_at_volt.com
Date: 02/27/04


Date: Fri, 27 Feb 2004 07:11:09 -0800

Has anyone adjusted their SSLv2 ciphers for IIS 5.0. The
link below is a how to but it is very unclear about which
ciphers and what steps should be followed. The issue
became apparent after a Nessus scan

http://support.microsoft.com/default.aspx?scid=kb;en-
us;245030&Product=win2000

Warning found on port https (443/tcp)
The SSLv2 server offers 4 strong ciphers, but also
0 medium strength and 2 weak "export class" ciphers.
The weak/medium ciphers may be chosen by an export-grade
or badly configured client software. They only offer a
limited protection against a brute force attack

Solution: disable those ciphers and upgrade your client
software if necessary
Nessus ID : 10863

This plugin connects to a SSL server, and
checks its certificate and the available (shared) SSLv2
ciphers.
Weak (export version) ciphers are reported.

Regards,
Danny Schelberg
CCNA, MCSE, MCP + I
Network Engineer
Procurestaff
Volt Information Sciences, Inc



Relevant Pages

  • Nessus Scan Report Result Questions
    ... medium strength and 2 weak "export class" ciphers. ... or badly configured client software. ... limited protection against a brute force attack ...
    (microsoft.public.inetserver.iis.security)
  • Nessus Scan & weak ciphers
    ... This article is clear on the how just not what ciphers ... >or badly configured client software. ... >This plugin connects to a SSL server, ...
    (microsoft.public.inetserver.iis.security)
  • Nessus & Cipher strenghts
    ... Has anyone adjusted their SSLv2 ciphers for IIS 5.0. ... became apparent after a Nessus scan. ... or badly configured client software. ...
    (microsoft.public.inetserver.iis.security)