drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Pufferüberlauf in ntpd
Name: |
Pufferüberlauf in ntpd
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ID: |
CSSA-2001-013.0 |
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Distribution: |
Caldera |
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Plattformen: |
Caldera eDesktop 2.4, Caldera eBuilder, Caldera eServer 2.3.1, Caldera 2.3 |
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Datum: |
Sa, 7. April 2001, 13:00 |
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Referenzen: |
Keine Angabe |
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Applikationen: |
NTP |
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Originalnachricht |
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1
______________________________________________________________________________ Caldera Systems, Inc. Security Advisory
Subject: remote root exploit in ntpd Advisory number: CSSA-2001-013.0 Issue date: 2001 April, 6 Cross reference: ______________________________________________________________________________
1. Problem Description
The ntp time synchronisation demon has a buffer overflow in its control request parsing which allows any remote attacker to gain root access, if the demon is running.
Caldera Systems is shipping this demon disabled by default, but we urge our customers to either deinstall or upgrade the package.
2. Vulnerable Versions
System Package ----------------------------------------------------------- OpenLinux 2.3 All packages previous to xntp-3.5.93e-5
OpenLinux eServer 2.3.1 All packages previous to and OpenLinux eBuilder xntp-3.5.93e-5
OpenLinux eDesktop 2.4 All packages previous to xntp-4.0.97-2
3. Solution
Workaround
Stop the demon and deinstall the xntp package by using: /etc/rc.d/init.d/ntp stop rpm -e xntp
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
19e51b89951b435061450398e764b753 RPMS/xntp-3.5.93e-5.i386.rpm 08a990b5034679c0a37ebbe20e162d05 SRPMS/xntp-3.5.93e-5.src.rpm
4.3 Installing Fixed Packages
Upgrade the affected packages with the following commands:
rpm -Fhv xntp-*.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
df892fae73626a11107552d7d1a68e6e RPMS/xntp-3.5.93e-5.i386.rpm 663eb55d629cdcc0212583e92be15d11 SRPMS/xntp-3.5.93e-5.src.rpm
5.3 Installing Fixed Packages
Upgrade the affected packages with the following commands:
rpm -Fvh xntp-*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
fe7cffdf379ee9b69890f9fa9ff0f320 RPMS/xntp-4.0.97-2.i386.rpm ff34841b2f01a252e6e31cb91ffcada5 SRPMS/xntp-4.0.97-2.src.rpm
6.3 Installing Fixed Packages
Upgrade the affected packages with the following commands:
rpm -Fvh xntp-*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 9744.
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.
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