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Sun Solaris Sadmind Insecure Default Configuration
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Secunia Advisory:
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SA9742
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Release Date:
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2003-09-16
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Last Update:
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2003-09-22
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Popularity:
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17,681 views
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Critical:
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Moderately critical
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Impact:
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System access
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Where:
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From local network
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Solution Status:
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Vendor Workaround
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| OS: | Sun Solaris 7
Sun Solaris 8
Sun Solaris 9
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2003-0722
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Description:
Sun has issued a security alert for Sun Solaris to raise awareness of the known insecure default configuration of sadmind (Solstice Administration Daemon) because an exploit has been discovered in the wild.
The security issue is caused due to default use of the insecure "AUTH_SYS" authentication mechanism, which should only be used on "trusted" networks since client credentials are easily forged.
This can be exploited to execute arbitrary commands on the system with the privileges of the sadmind daemon (typically "root") by sending a specially crafted sequence of RPC (Remote Procedure Call) requests forging the client credentials.
Solution:
Sun is not planning on releasing any patches. However, administrators are advised to use one of the following solutions:
1) Enable strong (AUTH_DES) authentication by adding "-S 2" to the sadmind entry in "inetd.conf".
2) Disable the sadmind daemon.
Furthermore, RPC services should not be accessible to systems on the Internet. Traffic should therefore be blocked at the network perimiter.
Provided and/or discovered by:
Mark Zielinski
iDEFENSE
Changelog:
2003-09-22: Added link to CERT vulnerability note in "Other References".
Original Advisory:
Sun advisory:
http://sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert/56740
iDEFENSE advisory:
http://www.idefense.com/advisory/09.16.03.txt
Other References:
Sun documentation of the sadmind daemon:
http://docs.sun.com/db/doc/816-0211/6m6nc676b?a=view
CERT:
http://www.kb.cert.org/vuls/id/41870
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