Mandrake Linux Security Advisory : util-linux (MDKSA-2002:047)

This script is Copyright (C) 2004-2013 Tenable Network Security, Inc.


Synopsis :

The remote Mandrake Linux host is missing one or more security
updates.

Description :

Michal Zalewski found a vulnerability in the util-linux package with
the chfn utility. This utility allows users to modify some information
in the /etc/passwd file, and is installed setuid root. Using a
carefully crafted attack sequence, an attacker can exploit a complex
file locking and modification race that would allow them to make
changes to the /etc/passwd file. To successfully exploit this
vulnerability and obtain privilege escalation, there is a need for
some administrator interaction, and the password file must over over
4kb in size; the attacker's entry cannot be in the last 4kb of the
file.

Solution :

Update the affected losetup, mount and / or util-linux packages.

Risk factor :

Medium / CVSS Base Score : 6.2
(CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:C)

Family: Mandriva Local Security Checks

Nessus Plugin ID: 13950 (mandrake_MDKSA-2002-047.nasl)

Bugtraq ID:

CVE ID: CVE-2002-0638

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