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Sun Microsystems Solaris NSPR Library Arbitrary File Creation
Vulnerability
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SUMMARY
The <http://www.mozilla.org/projects/nspr/> Netscape Portable Runtime
(NSPR) API allows compliant applications to use system facilities such as
threads, thread synchronization, I/O, interval timing, atomic operations
and several other low-level services in a platform-independent manner.
Local exploitation of a design error vulnerability in NSPR, as included
with Sun Microsystems Solaris 10, allows attackers to create or overwrite
arbitrary files on the system.
DETAILS
Vulnerable Systems:
* Sun Microsystems Solaris 10 with NSPR version 4.6.1.
The problem exists because environment variables are used to create log
files. Even when the program is setuid, users can specify a log file that
will be created with elevated privileges.
Exploitation allows local attackers to elevate privileges to root.
Vendor Status:
Sun Microsystems has addressed this issue with
<http://sunsolve.sun.com/search/document.do?assetkey=1-26-102658-1> Sun
Security Alert 102658.
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4842>
CVE-2006-4842
Disclosure Timeline:
* 08/31/2006 - Initial vendor notification
* 09/04/2006 - Initial vendor response
* 10/11/2006 - Coordinated public disclosure
ADDITIONAL INFORMATION
The information has been provided by iDefense.
The original article can be found at:
<http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=418>
http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=418
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