eSO Security Advisory: 2397
Discovery Date: March 28, 2000
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
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.
Apply the following patches.
As a workaround solution, remove the setuid permissions with the following: chmod -s /usr/bin/admintool
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.
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