[NEWS] Popper Insecure Temporary File Creation
SecuriTeam <[email protected]>
| Newsgroups | gmane.comp.security.securiteam |
|---|---|
| Message-ID | <[email protected]> |
The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com - - promotion The SecuriTeam alerts list - Free, Accurate, Independent. Get your security news from a reliable source. http://www.securiteam.com/mailinglist.html - - - - - - - - - Popper Insecure Temporary File Creation ------------------------------------------------------------------------ SUMMARY " <http://kpopper.sourceforge.net/> Popper is a very simple, easy-to-use and functional network messenger." Due to lack of randomness in the names given to temporary files used by the Popper application local attackers can gain privileges of other users. DETAILS Vulnerable Systems: * Popper version 1.0 and prior The vulnerability is caused due to temporary file being created insecurely. This can be exploited via symbolic-link attacks and in turn to create and/or overwrite arbitrary files with the privileges of the user running the affected script. Code Snips: popper/popper-send.sh: #!/bin/sh echo "$2" > /tmp/.popper-new echo `date +"%a %l:%m %p"` >> /tmp/.popper-new cat "$1" >> /tmp/.popper-new mv -f /tmp/.popper-new /tmp/.popper The .popper is also used in popper/popper.cpp. CVE Information: <http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1917> CAN-2005-1917 ADDITIONAL INFORMATION The information has been provided by <mailto:[email protected]> ZATAZ Audits . The original article can be found at: <http://www.zataz.net/adviso/kpopper-06152005.txt> http://www.zataz.net/adviso/kpopper-06152005.txt, <http://bugs.gentoo.org/show_bug.cgi?id=94475> http://bugs.gentoo.org/show_bug.cgi?id=94475 ======================================== This bulletin is sent to members of the SecuriTeam mailing list. To unsubscribe from the list, send mail with an empty subject line and body to: [email protected] In order to subscribe to the mailing list, simply forward this email to: [email protected] ==================== ==================== DISCLAIMER: The information in this bulletin is provided "AS IS" without warranty of any kind. In no event shall we be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages.