O-001: Sun aspppls(1M) does not create the temporary file /tmp/.asppp.fifo safely

[***** Start Sun Alert ID: 46903 *****]

Sun(sm) Alert Notification
Sun Alert ID: 46903 
Synopsis: aspppls(1M) Does Not Create the Temporary File /tmp/.asppp.fifo Safely 
Category: Security 
Product: Solaris 
BugIDs: 4683015 
Avoidance: Patch 
State: Resolved 
Date Released: 09-Sep-2002 
Date Closed: 09-Sep-2002 
Date Modified: 

1. Impact 

A local unprivileged user may be able overwrite or create any file on a Solaris 8 system which 
could lead to a unprivileged local user gaining unauthorized root privileges due to a security 
issue with aspppls(1M). 

Sun acknowledges with thanks, Kevin Kotas of eSecurityOnline for bringing this issue to our 
attention. 

2. Contributing Factors 

This issue can occur in the following releases: 

SPARC 

Solaris 8 without patch 111299-04 

Intel 

Solaris 8 without patch 111300-04 

Note: Solaris 2.5.1, 2.6, 7, and 9 are not affected by this issue. 

3. Symptoms 

There are no predictable symptoms that would show the described issue has been exploited, as it 
depends on which file is overwritten or created. 

Solution Summary Top 

4. Relief/Workaround 

If asynchronous PPP is not being used at the customer site, the setuid permissions on the 
aspppls(1M) binary could be removed via the following command run as root: 

	# chmod u-s /usr/sbin/aspppls                        

The asynchronous PPP packages could also be removed if asynchronous PPP is not being used via 
the following command run as root: 

	# pkgrm SUNWapppr SUNWpppdu                        

5. Resolution 

This issue is addressed in the following releases: 

SPARC 

Solaris 8 with patch 111299-04 or later 

Intel 

Solaris 8 with patch 111300-04 or later 

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Copyright 2001, 2002 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, CA 95054 U.S.A. 
All rights reserved. 


[***** End Sun Alert ID: 46903 *****]

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