eSO Security Advisory: 2397
Discovery Date: March 28, 2000
ID: eSO:2397
Title: Sun Solaris admintool -d and PRODVERS buffer
overflow vulnerabilities
Impact: Local attackers can gain root privileges
Affected Technology: Solaris 2.5, 2.5.1, 2.6, 7, 8 SPARC and x86
Vendor Status: Patches are available
Discovered By: Kevin Kotas of the eSecurityOnline Research
and Development Team
CVE Reference: CAN-2002-0089
Advisory Location:
http://www.eSecurityOnline.com/advisories/eSO2397.asp
Description:
The Sun Solaris admintool utility is vulnerable to multiple buffer
overflow conditions that allow a local attacker to gain root access.
The problems are due to insufficient bounds checking on command line
options and on a configuration file variable. An attacker can use a
carefully constructed string with the -d command line option or with
the PRODVERS .cdtoc file variable to gain root privileges.
The first buffer overflow is related to command line execution of
admintool with the -d switch, when a long string is used with
"/Solaris" present.
The second buffer overflow occurs due to a lack of bounds checking
for the PRODVERS argument in the .cdtoc file. The .cdtoc file is used
to specify variables for installation media. Through the
software/edit/add feature, a local directory can be specified that
contains a .cdtoc file. The file can contain a string of data for
the PRODVERS variable that will cause the program to crash or execute
code when processed.
Technical Recommendation:
Apply the following patches.
Solaris 2.5:
103247-16
Solaris 2.5_x86:
103245-16
Solaris 2.5.1:
103558-16
Solaris 2.5.1_x86:
103559-16
Solaris 2.6:
105800-07
Solaris 2.6_x86:
105801-07
Solaris 7:
108721-02
Solaris 7_x86:
108722-02
Solaris 8:
10453-01
Solaris 8_x86:
110454-01
As a workaround solution, remove the setuid permissions with the following:
chmod -s /usr/bin/admintool
Vendor site:
http://sunsolve.sun.com
Acknowledgements:
eSecurityOnline would like to thank Sun Microsystems and the Sun security
team for their cooperation in resolving the issue.
Copyright 2002 eSecurityOnline LLC. All rights reserved.
THE INFORMATION IN THIS VULNERABILITY ALERT IS PROVIDED BY
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PURPOSE. ESECURITYONLINE LLC SHALL HAVE NO LIABILITY FOR ANY DAMAGE,
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THIS VULNERABILITY ALERT.
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