Date: Fri, 24 Aug 2001 13:57:21 -0600
From: Caldera Support Info <[email protected]>
To: [email protected], [email protected],
Subject: Security Update [CSSA-2001-032.0] Linux - sendmail instant root exploit
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Caldera International, Inc. Security Advisory
Subject: Linux - sendmail instant root exploit
Advisory number: CSSA-2001-032.0
Issue date: 2001, August 24
Cross reference:
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1. Problem Description
Sendmail contains an input validation error, so local users may be
able to write arbitrary data to process memory, possibly allowing the
execution of code/commands with elevated privileges. This allows
a local attacker to gain access to the root account.
2. Vulnerable Versions
System Package
-----------------------------------------------------------
OpenLinux 2.3 not vulnerable =20
=20
OpenLinux eServer 2.3.1 not vulnerable =20
and OpenLinux eBuilder =20
=20
OpenLinux eDesktop 2.4 not vulnerable =20
=20
OpenLinux Server 3.1 All packages previous to =20
sendmail-8.11.1-4 =20
=20
OpenLinux Workstation 3.1 All packages previous to =20
sendmail-8.11.1-4 =20
=20
3. Solution
Workaround
none
The proper solution is to upgrade to the latest packages.
4. OpenLinux 2.3
not vulnerable
5. OpenLinux eServer 2.3.1 and OpenLinux eBuilder for ECential 3.0
not vulnerable
6. OpenLinux eDesktop 2.4
not vulnerable
7. OpenLinux 3.1 Server
7.1 Location of Fixed Packages
The upgrade packages can be found on Caldera's FTP site at:
ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Server/current/RPMS
The corresponding source code package can be found at:
ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Server/current/SRPMS
7.2 Verification
b4fda9679325022adda547f1b3fae8dc RPMS/sendmail-8.11.1-4.i386.rpm
f3eaef00ae6a7cb30635baf6ad13325a RPMS/sendmail-cf-8.11.1-4.i386.rpm
1f17f7fa698748eb5bc6e55951948451 RPMS/sendmail-doc-8.11.1-4.i386.rpm
c3f6af83c406174b325aa28af45c51ae SRPMS/sendmail-8.11.1-4.src.rpm
=20
7.3 Installing Fixed Packages
Upgrade the affected packages with the following commands:
rpm -Fvh sendmail-8.11.1-4.i386.rpm \
sendmail-cf-8.11.1-4.i386.rpm \
sendmail-doc-8.11.1-4.i386.rpm
=20
8. OpenLinux 3.1 Workstation
8.1 Location of Fixed Packages
The upgrade packages can be found on Caldera's FTP site at:
ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Workstation/current/=
RPMS
The corresponding source code package can be found at:
ftp://ftp.caldera.com/pub/updates/OpenLinux/3.1/Workstation/current/=
SRPMS
8.2 Verification
b4fda9679325022adda547f1b3fae8dc RPMS/sendmail-8.11.1-4.i386.rpm
f3eaef00ae6a7cb30635baf6ad13325a RPMS/sendmail-cf-8.11.1-4.i386.rpm
1f17f7fa698748eb5bc6e55951948451 RPMS/sendmail-doc-8.11.1-4.i386.rpm
c3f6af83c406174b325aa28af45c51ae SRPMS/sendmail-8.11.1-4.src.rpm
=20
8.3 Installing Fixed Packages
Upgrade the affected packages with the following commands:
rpm -Fvh sendmail-8.11.1-4.i386.rpm \
sendmail-cf-8.11.1-4.i386.rpm \
sendmail-doc-8.11.1-4.i386.rpm
=20
9. References
This and other Caldera security resources are located at:
http://www.caldera.com/support/security/index.html
This security fix closes Caldera's internal Problem Report 10420.
10. Acknowledgements
=20
Caldera International wishes to thank Cade Cairns of SecurityFocus for
spotting and reporting this bug.
11. Disclaimer
Caldera International, 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.
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