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Redhat : Updated samba packages fix vulnerabilities
Red Hat Network has determined that the following advisory is applicable to
one or more of the systems you have registered:
Complete information about this errata can be found at the following location:
https://rhn.redhat.com/network/errata/errata_details.pxt?eid=2425
Security Advisory - RHSA-2004:467-08
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Summary:
Updated samba packages fix vulnerabilities
Updated samba packages that fix two denial of service vulnerabilities are
now available.
[Updated 23rd September 2004]
Packages have been updated to include the ppc64 packages which were left
out of the initial errata.
Description:
Samba provides file and printer sharing services to SMB/CIFS clients.
The Samba team has discovered a denial of service bug in the smbd daemon.
A defect in smbd's ASN.1 parsing allows an attacker to send a specially
crafted packet during the authentication request which will send the newly
spawned smbd process into an infinite loop. Given enough of these packets,
it is possible to exhaust the available memory on the server. The Common
Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name
CAN-2004-0807 to this issue.
Additionally the Samba team has also discovered a denial of service bug in
the nmbd daemon. It is possible that an attacker could send a specially
crafted UDP packet which could allow the attacker to anonymously
crash nmbd. This issue only affects nmbd daemons which are configured to
process domain logons. The Common Vulnerabilities and Exposures project
(cve.mitre.org) has assigned the name CAN-2004-0808 to this issue.
Users of Samba should upgrade to these updated packages, which contain an
upgrade to Samba-3.0.7, which is not vulnerable to these issues.
References:
http://us3.samba.org/samba/history/samba-3.0.7.html
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Taking Action
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You may address the issues outlined in this advisory in two ways:
- select your server name by clicking on its name from the list
available at the following location, and then schedule an
errata update for it:
https://rhn.redhat.com/network/systemlist/system_list.pxt
- run the Update Agent on each affected server.
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Changing Notification Preferences
---------------------------------
To enable/disable your Errata Alert preferences globally please log in to RHN
and navigate from "Your RHN" / "Your Account" to the "Preferences" tab.
URL: https://rhn.redhat.com/network/my_account/my_prefs.pxt
You can also enable/disable notification on a per system basis by selecting an
individual system from the "Systems List". From the individual system view
click the "Details" tab.
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Affected Systems List
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This Errata Advisory may apply to the systems listed below. If you know that
this errata does not apply to a system listed, it might be possible that the
package profile for that server is out of date. In that case you should run
'up2date -p' as root on the system in question to refresh your software profile.
There are 16 affected systems registered in 'Your RHN' (only systems for
which you have explicitly enabled Errata Alerts are shown).
Release Arch Profile Name
-------- -------- ------------
3AS i686 durian.nac.uci.edu
3AS i686 br.nac.uci.edu
3AS i686 hydra.nac.uci.edu
3AS i686 p02.es.uci.edu
3AS i686 clarkii.nac.uci.edu
3AS x86_64 narg.nac.uci.edu
3WS x86_64 bgcluster01
3WS x86_64 bgcluster02
3AS i686 vesta.nac.uci.edu
3AS x86_64 pxe.es.uci.edu
3WS i686 node-xeon-4
3WS i686 node-xeon-10
3AS x86_64 iwt03.nac.uci.edu
3AS x86_64 iwt02.nac.uci.edu
3AS i686 ibm
3WS i686 ciderhouse.nac.uci.edu
The Red Hat Network Team
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