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[ GLSA 200502-30 ] cmd5checkpw: Local password leak vulnerability
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GLSA
Bodhisattva
Bodhisattva


Joined: 17 Apr 2002
Posts: 2602
Location: Raleigh, NC

PostPosted: Fri Feb 25, 2005 10:46 pm    Post subject: [ GLSA 200502-30 ] cmd5checkpw: Local password leak vulnerab Reply with quote

Gentoo Linux Security Advisory

Title: cmd5checkpw: Local password leak vulnerability (GLSA 200502-30)
Severity: low
Exploitable: local
Date: February 25, 2005
Updated: May 22, 2006
Bug(s): #78256
ID: 200502-30

Synopsis

cmd5checkpw contains a flaw allowing local users to access other users cmd5checkpw passwords.

Background

cmd5checkpw is a checkpassword compatible authentication program that uses CRAM-MD5 authentication mode.

Affected Packages

Package: net-mail/cmd5checkpw
Vulnerable: <= 0.22-r1
Unaffected: >= 0.22-r2
Architectures: All supported architectures


Description

Florian Westphal discovered that cmd5checkpw is installed setuid cmd5checkpw but does not drop privileges before calling execvp(), so the invoked program retains the cmd5checkpw euid.

Impact

Local users that know at least one valid /etc/poppasswd user/password combination can read the /etc/poppasswd file.

Workaround

There is no known workaround at this time.

Resolution

All cmd5checkpw users should upgrade to the latest available version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-mail/cmd5checkpw-0.22-r2"


References

CVE-2005-0580


Last edited by GLSA on Mon May 22, 2006 4:18 am; edited 2 times in total
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