drucken bookmarks versenden konfigurieren admin pdf Sicherheit: Fehler im X11 Forwarding von OpenSSH
Name: |
Fehler im X11 Forwarding von OpenSSH |
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ID: |
RHSA-2000:111-04 |
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Distribution: |
Red Hat |
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Plattformen: |
Red Hat Linux |
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Datum: |
Di, 28. November 2000, 12:00 |
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Referenzen: |
http://www.openbsd.org/errata27.html#sshforwarding |
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Applikationen: |
Portable OpenSSH |
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Originalnachricht |
--------------------------------------------------------------------- Red Hat, Inc. Security Advisory
Synopsis: Updated openssh packages available for Red Hat Linux 7 Advisory ID: RHSA-2000:111-04 Issue date: 2000-11-20 Updated on: 2000-11-27 Product: Red Hat Linux Keywords: openssh malicious server port forwarding Cross references: N/A ---------------------------------------------------------------------
1. Topic:
Updated openssh packages are now available for Red Hat Linux 7.
2000-11-27: Added packages for Red Hat Linux 7 for Alpha
2. Relevant releases/architectures:
Red Hat Linux 7.0 - i386, alpha
3. Problem description:
An OpenSSH client will do agent or X11 forwarding at the request of a
server, even if the user has not requested that it be done. A malicious
server can exploit this vulnerability to gain access to the user's display.
4. Solution:
For each RPM for your particular architecture, run:
rpm -Fvh [filename]
where filename is the name of the RPM.
5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info):
18598 - ssh-keygen -l does not work for dsa keys 20805 - Hostile servers can force OpenSSH clients to do agent or X11 forwarding 20884 - openssh-2.3.0p1 doesn't include /etc/ssh/primes
6. RPMs required:
Red Hat Linux 7.0:
alpha: ftp://updates.redhat.com/7.0/alpha/openssh-2.3.0p1-4.alpha.rpm ftp://updates.redhat.com/7.0/alpha/openssh-clients-2.3.0p1-4.alpha.rpm ftp://updates.redhat.com/7.0/alpha/openssh-server-2.3.0p1-4.alpha.rpm ftp://updates.redhat.com/7.0/alpha/openssh-askpass-2.3.0p1-4.alpha.rpm ftp://updates.redhat.com/7.0/alpha/openssh-askpass-gnome-2.3.0p1-4.alpha.rpm
i386: ftp://updates.redhat.com/7.0/i386/openssh-2.3.0p1-4.i386.rpm ftp://updates.redhat.com/7.0/i386/openssh-clients-2.3.0p1-4.i386.rpm ftp://updates.redhat.com/7.0/i386/openssh-server-2.3.0p1-4.i386.rpm ftp://updates.redhat.com/7.0/i386/openssh-askpass-2.3.0p1-4.i386.rpm ftp://updates.redhat.com/7.0/i386/openssh-askpass-gnome-2.3.0p1-4.i386.rpm
sources: ftp://updates.redhat.com/7.0/SRPMS/openssh-2.3.0p1-4.src.rpm
7. Verification:
MD5 sum Package Name -------------------------------------------------------------------------- d564b593cce6c1afaa02a11004ef6cf7 7.0/SRPMS/openssh-2.3.0p1-4.src.rpm cfa7b84d1389e921d11cd93888014bbe 7.0/alpha/openssh-2.3.0p1-4.alpha.rpm 59464df875127cc44ca1976db62bb977 7.0/alpha/openssh-askpass-2.3.0p1-4.alpha.rpm 957467291fc0067d70bef99c88401dcf 7.0/alpha/openssh-askpass-gnome-2.3.0p1-4.alpha.rpm da26d6a308c2c3c79f56eec077bce664 7.0/alpha/openssh-clients-2.3.0p1-4.alpha.rpm 5e4951bc163601aad8733011933d79db 7.0/alpha/openssh-server-2.3.0p1-4.alpha.rpm 973c033bd3cf3e3641f7fb9d172baf5a 7.0/i386/openssh-2.3.0p1-4.i386.rpm ead1cc84519f5a6fa0233ce8d3237457 7.0/i386/openssh-askpass-2.3.0p1-4.i386.rpm d426ff6c55181f8ccbea6e2f7a307b99 7.0/i386/openssh-askpass-gnome-2.3.0p1-4.i386.rpm 51fe082e6830e461a900000e2884cb14 7.0/i386/openssh-clients-2.3.0p1-4.i386.rpm dd9bb3271403162202599d3cd8b9a22e 7.0/i386/openssh-server-2.3.0p1-4.i386.rpm
These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/corp/contact.html
You can verify each package with the following command: rpm --checksig <filename>
If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command: rpm --checksig --nogpg <filename>
8. References:
http://www.openbsd.org/errata27.html#sshforwarding
Copyright(c) 2000 Red Hat, Inc.
_______________________________________________ Redhat-watch-list mailing list To unsubscribe, visit: https://listman.redhat.com/mailman/listinfo/redhat-watch-list
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