Some vulnerabilities have been discovered in SurgeMail, which can be exploited by malicious users to compromise a vulnerable system and by malicious people to cause a DoS (Denial of Service) or potentially compromise a vulnerable system.

1) A format string error in the webmail.exe CGI application when handling e.g. strings assigned to the "page" parameter can be exploited via a specially crafted HTTP request containing format string specifiers.

Successful exploitation may allow execution of arbitrary code.

2) A boundary error in "_lib_spawn_user_getpid()" within swatch.exe and surgemail.exe can be exploited to cause a stack-based buffer overflow via a specially crafted HTTP request containing e.g. multiple overly long headers.

3) A boundary error exists within the IMAP service when processing "LIST" commands. This can be exploited to cause a stack-based buffer overflow via an overly long argument to a "LIST" command.

4) A boundary error exists within the IMAP service when processing "LSUB" commands. This can be exploited to cause a stack-based buffer overflow via an overly long argument to a "LSUB" command.

Successful exploitation of vulnerabilities #3 and #4 allow execution of arbitrary code, but requires valid user credentials.

The vulnerabilities are confirmed in version 38k4. Other versions may also be affected.

Solution
Update to version 39c.
Further details available to Secunia VIM customers

Provided and/or discovered by
1, 2) Luigi Auriemma
3) Matteo Memelli a.k.a. ryujin
4) Leon Juranic, INFIGO IS

Changelog
Further details available to Secunia VIM customers

Original Advisory
Luigi Auriemma:
http://aluigi.altervista.org/adv/surgemailz-adv.txt

Matteo Memelli:
http://milw0rm.com/exploits/5259

INFIGO-2008-03-07:
http://www.infigo.hr/en/in_focus/advisories/INFIGO-2008-03-07

Deep Links
Links available to Secunia VIM customers