bugtraq - [USN-17-1] passwd vulnerability

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Message-ID: <20041104231737.GA10505@box79162.elkhouse.de>
Date: Fri, 5 Nov 2004 00:17:37 +0100
From: Martin Pitt <martin.pitt@...onical.com>
To: ubuntu-security-announce@...ts.ubuntu.com
Cc: bugtraq@...urityfocus.com, full-disclosure@...ts.netsys.com
Subject: [USN-17-1] passwd vulnerability

===========================================================
Ubuntu Security Notice USN-17-1		  November 04, 2004
passwd vulnerabilities
CAN-2004-1001
===========================================================

A security issue affects the following Ubuntu releases:

Ubuntu 4.10 (Warty Warthog)

The following packages are affected:

login

The problem can be corrected by upgrading the affected package to
version 1:4.0.3-28.5ubuntu6.1.  In general, a standard system upgrade is
sufficient to effect the necessary changes.

Details follow:

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.

  Source archives:

    http://security.ubuntu.com/ubuntu/pool/main/s/shadow/shadow_4.0.3-28.5ubuntu6.1.diff.gz
      Size/MD5:   867465 303fa8a07bb4eba9f9631c5cf42292a6
    http://security.ubuntu.com/ubuntu/pool/main/s/shadow/shadow_4.0.3-28.5ubuntu6.1.dsc
      Size/MD5:      765 0984a277557ba9c4c0b86eb0cefb187b
    http://security.ubuntu.com/ubuntu/pool/main/s/shadow/shadow_4.0.3.orig.tar.gz
      Size/MD5:  1045704 b52dfb2e5e8d9a4a2aae0ca1b266c513

  amd64 architecture (Athlon64, Opteron, EM64T Xeon)

    http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.3-28.5ubuntu6.1_amd64.deb
      Size/MD5:   479806 ad349ec07af2401a54e362ae44b3f9b7
    http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.3-28.5ubuntu6.1_amd64.deb
      Size/MD5:   537040 afac30c20348f66858ef3f64db39bc1a

  i386 architecture (x86 compatible Intel/AMD)

    http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.3-28.5ubuntu6.1_i386.deb
      Size/MD5:   470896 e96c974163514322ab217590585104ab
    http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.3-28.5ubuntu6.1_i386.deb
      Size/MD5:   462882 1c5c3182c35caac48a5f8b514130a556

  powerpc architecture (Apple Macintosh G3/G4/G5)

    http://security.ubuntu.com/ubuntu/pool/main/s/shadow/login_4.0.3-28.5ubuntu6.1_powerpc.deb
      Size/MD5:   478822 a9ab73b912180b9d42a54e93413a2591
    http://security.ubuntu.com/ubuntu/pool/main/s/shadow/passwd_4.0.3-28.5ubuntu6.1_powerpc.deb
      Size/MD5:   500062 680dc84a6925888b83ca6c8236b2cc3b

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