Yahoo! Instant Messenger Plain Text Password Vulnerability

BID:4173

Info

Yahoo! Instant Messenger Plain Text Password Vulnerability

Bugtraq ID: 4173
Class: Design Error
CVE: CVE-2002-0322
Remote: Yes
Local: No
Published: Feb 22 2002 12:00AM
Updated: Jul 11 2009 10:56AM
Credit: Discovered by Chris Bisnett <[email protected]>.
Vulnerable: Yahoo! Messenger 4.0
- Microsoft Windows 2000 Professional SP2
- Microsoft Windows 2000 Professional SP1
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows ME
- Microsoft Windows NT Workstation 4.0 SP6a
- Microsoft Windows NT Workstation 4.0 SP6
- Microsoft Windows NT Workstation 4.0 SP5
- Microsoft Windows NT Workstation 4.0 SP4
- Microsoft Windows NT Workstation 4.0 SP3
- Microsoft Windows NT Workstation 4.0 SP2
- Microsoft Windows NT Workstation 4.0 SP1
- Microsoft Windows NT Workstation 4.0
- Microsoft Windows XP Home
Not Vulnerable: Yahoo! Messenger 5.0
- Microsoft Windows 2000 Professional SP2
- Microsoft Windows 2000 Professional SP1
- Microsoft Windows 2000 Professional
- Microsoft Windows 95
- Microsoft Windows 98
- Microsoft Windows ME
- Microsoft Windows NT Workstation 4.0 SP6a
- Microsoft Windows NT Workstation 4.0 SP5
- Microsoft Windows NT Workstation 4.0 SP4
- Microsoft Windows NT Workstation 4.0 SP3
- Microsoft Windows NT Workstation 4.0 SP2
- Microsoft Windows NT Workstation 4.0 SP1
- Microsoft Windows NT Workstation 4.0
- Microsoft Windows XP Home

Discussion

Yahoo! Instant Messenger Plain Text Password Vulnerability

Yahoo! Messenger is the main client for Yahoo's instant messaging service.

It has been reported that Yahoo! Messenger version 4 does not encrypt the data transferred when a user is authenticating.

If a malicious third party could eavesdrop on network traffic between the messenger client and the Yahoo! server, this could potentially disclose, in plain text, the authentication information of a user.

Exploit / POC

Yahoo! Instant Messenger Plain Text Password Vulnerability

No exploit code is required.

Solution / Fix

Yahoo! Instant Messenger Plain Text Password Vulnerability

Solution:
Reportedly Yahoo! Messenger version 5 is not affected by this issue:

http://messenger.yahoo.com/

References

Yahoo! Instant Messenger Plain Text Password Vulnerability

References:

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