Security vulnerabilities in lpsched(1M) may allow a local unprivileged user the ability to delete any file or disable the LP print service on a system configured as a print server.

Sun acknowledges, with thanks, Hiroshi Nakano of Ryukoku University for bringing these issues to our attention.

These issues can occur in the following releases:

SPARC Platform

• Solaris 8 without patch 109320-17
• Solaris 9 without patch 113329-16
• Solaris 10 without patch 120467-03

x86 Platform

• Solaris 8 without patch 109321-17
• Solaris 9 without patch 114980-17
• Solaris 10 without patch 120468-03

Note: Solaris 7 will not be evaluated regarding the potential impact of the issue described in this Sun Alert.

This issue only affects systems which have been configured to act as print servers. To determine if the system has been configured as a print server, the following command can be used: 

    $ ls /etc/lp/printers

If there are files listed, then the host in question is a print server.

There are a number of possible symptoms of this issue, including the modification/deletion of files owned by privileged users and the disabling of the main Solaris print daemon. In order to check whether the Solaris print daemon has been disabled on a print server, the following command can be run:

    % lpstat -r

and will return either "scheduler is running" or "scheduler is not running."

There is no workaround to these issues. Please see the Resolution section below.

These issues are addressed in the following releases:

SPARC Platform

• Solaris 8 with patch 109320-17 or later
• Solaris 9 with patch 113329-16 or later
• Solaris 10 with patch 120467-03 or later

x86 Platform

• Solaris 8 with patch 109321-17 or later
• Solaris 9 with patch 114980-17 or later
• Solaris 10 with patch 120468-03 or later

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