USN-17-1: passwd vulnerability
Ubuntu Security Notice USN-17-1
5th November, 2004
passwd vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 4.10
Details
Martin Schulze and Steve Grubb discovered a flaw in the authentication
input validation of the "chfn" and "chsh" programs. This allowed
logged in users with an expired password to change their real name and
their login shell without having to change their password.
This flaw cannot lead to privilege escalation and does not allow to
modify account properties of other users, so the impact is relatively
low.
Update instructions
The problem can be corrected by updating your system to the following package version:
- Ubuntu 4.10:
- login
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
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