[UNIX] Mathopd Insecure Dump 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 - - - - - - - - - Mathopd Insecure Dump File Creation ------------------------------------------------------------------------ SUMMARY " <http://www.mathopd.org/> Mathopd is a very small, yet very fast HTTP server for UN*X systems. Mathopd supports useful features of HTTP/1.1, such as persistent connections, partial responses and pipelining. It does not support things like content negotiation. The latest version of the software (1.5) also supports CGI/1.1". Recently discovered vulnerability in Mathopd, can be exploited by malicious local users to corrupt the contents of arbitrary files on a vulnerable system. DETAILS Vulnerable Systems: * Mathopd version 1.5p4 * Mathopd version 1.6b5 Immune Systems: * Mathopd version 1.5p5 * Mathopd version 1.6b6 Beta The vulnerability is caused due to the "internal_dump()" function creating dump files insecurely when a SIGWINCH signal is caught. This can be exploited via symlink attacks to append dump data to arbitrary files on the system with the privileges of the user running Mathopd. Successful exploitation requires that Mathopd is running with the "-n" command line option, and the user running Mathopd resizes the terminal window. ADDITIONAL INFORMATION The information has been provided by <mailto:[email protected]> Michiel Boland. The original article can be found at: <http://www.mail-archive.com/mathopd%40mathopd.org/msg00272.html> http://www.mail-archive.com/mathopd%40mathopd.org/msg00272.html ======================================== 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.