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SCO Unixware Setuid 'uidadmin' Scheme Buffer Overflow
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SUMMARY
" <http://www.sco.com/> SCO Unixware is a Unix operating system that runs
on many OEM platforms."
Local exploitation of a buffer overflow vulnerability in the uidadmin
binary included in multiple versions of The SCO Group Inc.'s Unixware
allows attackers to gain root privileges and execute arbitrary code.
DETAILS
Vulnerable Systems:
* SCO Unixware version 7.1.3
* SCO Unixware version 7.1.4
The vulnerability specifically exists because of a failure to check the
length of user specified file input. If the user prepares a file longer
than 1,600 bytes and supplies the path to that file using the "-S" option
of uidadmin, a stack based buffer overflow occurs. This leads to the
execution of arbitrary code with root privileges, as uidadmin is setuid
root by default.
Successful exploitation of this vulnerability requires that a user have
local access to the system. This would allow the user to gain super user
privileges and execute arbitrary code.
Vendor Status:
The vendor has released the following update to address this
vulnerability: <ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.54>
ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.54
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-3903>
CVE-2005-3903
Disclosure Timeline:
10/12/2005 - Initial vendor notification
10/13/2005 - Initial vendor response
12/12/2005 - Coordinated public disclosure
ADDITIONAL INFORMATION
The information has been provided by
<mailto:idlabs-advisories@lists.idefense.com> iDEFENSE.
The original article can be found at:
<http://www.idefense.com/application/poi/display?id=350&type=vulnerabilities&flashstatus=true>
http://www.idefense.com/application/poi/display?id=350&type=vulnerabilities
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