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Caldera Systems Security Advisory: several buffer overflows in imap, ipop2d and ipop3d

Mar 14, 2001, 01:06 (0 Talkback[s])

Date: Mon, 12 Mar 2001 12:21:18 -0700
From: Caldera Support Info sup-info@LOCUTUS4.CALDERASYSTEMS.COM
To: BUGTRAQ@SECURITYFOCUS.COM
Subject: Security Update: several buffer overflows in imap, ipop2d and ipop3d CSSA-2001-011.0


                   Caldera Systems, Inc.  Security Advisory

Subject:                several buffer overflows in imap, ipop2d and ipop3d
Advisory number:        CSSA-2001-011.0
Issue date:             2001 March, 12
Cross reference:

1. Problem Description

There are several buffer overflows in imap, ipop2d and ipop3d. These overflows usually only make it possible for local users to gain access to a process running under their own UID.

However, due to a misconfiguration, it is possible for remote attackers to gain access to the 'nobody' account and run programs or further exploits on the attacked machine.

2. Vulnerable Versions

   System                       Package


   OpenLinux 2.3                All packages previous to
                                imap-4.6.BETA-2

OpenLinux eServer 2.3.1 All packages previous to and OpenLinux eBuilder imap-4.6.BETA-2
OpenLinux eDesktop 2.4 All packages previous to imap-4.7-2
3. Solution

Workaround

none

The proper solution is to upgrade to the latest packages.

4. OpenLinux 2.3

4.1 Location of Fixed Packages

The upgrade packages can be found on Caldera's FTP site at:

ftp://ftp.calderasystems.com/pub/updates/OpenLinux/2.3/current/RPMS/

The corresponding source code package can be found at:

ftp://ftp.calderasystems.com/pub/updates/OpenLinux/2.3/current/SRPMS

4.2 Verification

1734155c1a521454514832a38e5bb2c0 RPMS/imap-4.6.BETA-2.i386.rpm
4fcad7966ca27f7a63ee912de6045811 SRPMS/imap-4.6.BETA-2.src.rpm
4.3 Installing Fixed Packages

Upgrade the affected packages with the following commands:

rpm -Fhv imap*.i386.rpm

5. OpenLinux eServer 2.3.1 and OpenLinux eBuilder for ECential 3.0

5.1 Location of Fixed Packages

The upgrade packages can be found on Caldera's FTP site at:

ftp://ftp.calderasystems.com/pub/updates/eServer/2.3/current/RPMS/

The corresponding source code package can be found at:

ftp://ftp.calderasystems.com/pub/updates/eServer/2.3/current/SRPMS

5.2 Verification

97f0da23b7f459d0da8fc9b2fb9fc00e RPMS/imap-4.6.BETA-2.i386.rpm
9d7d8b72db44cc1b9c53d3f4b2aba092 SRPMS/imap-4.6.BETA-2.src.rpm
5.3 Installing Fixed Packages

Upgrade the affected packages with the following commands:

rpm -Fvh imap*i386.rpm

6. OpenLinux eDesktop 2.4

6.1 Location of Fixed Packages

The upgrade packages can be found on Caldera's FTP site at:

ftp://ftp.calderasystems.com/pub/updates/eDesktop/2.4/current/RPMS/

The corresponding source code package can be found at:

ftp://ftp.calderasystems.com/pub/updates/eDesktop/2.4/current/SRPMS

6.2 Verification

0ac6767f30f6f5f20e556a34d5928911 RPMS/imap-4.7-2.i386.rpm
639eaca8cb1c6ff4884fc36b711d792e RPMS/imap-devel-4.7-2.i386.rpm
2a056aae7f0bb2c434c5955dc5cb60bc SRPMS/imap-4.7-2.src.rpm
6.3 Installing Fixed Packages

Upgrade the affected packages with the following commands:

rpm -Fvh imap*i386.rpm

7. References

This and other Caldera security resources are located at:

http://www.calderasystems.com/support/security/index.html

This security fix closes Caldera's internal Problem Report 9328.

8. Disclaimer

Caldera Systems, Inc. is not responsible for the misuse of any of the information we provide on this website and/or through our security advisories. Our advisories are a service to our customers intended to promote secure installation and use of Caldera OpenLinux.

9. Acknowledgements

Caldera Systems wishes to thank Chris Evans for spotting this problem and providing a fix.