TITLE:
Novell NetMail NMAP Agent "USER" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA15925

VERIFY ADVISORY:
http://secunia.com/advisories/15925/

CRITICAL:
Less critical

IMPACT:
System access

WHERE:
>From local network

SOFTWARE:
Novell NetMail 3.x
http://secunia.com/product/1530/

DESCRIPTION:
Secunia research has discovered a vulnerability in Novell NetMail,
which can be exploited by malicious people to compromise a vulnerable
system.

The vulnerability is caused due to a boundary error in the NMAP
(Network Messaging Application Protocol) Agent when handling an
overly long user name in the "USER" command. This can be exploited to
cause a stack-based buffer overflow and allows arbitrary code
execution.

Successful exploitation requires valid logon to the NMAP Agent (e.g.
if the default NMAP authentication credential has not been changed).

For more information:
SA13377

The vulnerability has been confirmed in version 3.52C. Prior versions
may also be affected.

SOLUTION:
Update to version 3.52D.

NetWare:
http://support.novell.com/servlet/filedownload/pub/netmail352d_nw.zip

Windows:
http://support.novell.com/servlet/filedownload/pub/netmail352d_win.zip

Linux:
http://support.novell.com/servlet/filedownload/sec/pub/netmail352d_lin.tgz

PROVIDED AND/OR DISCOVERED BY:
Tan Chew Keong, Secunia Research.

ORIGINAL ADVISORY:
Novell:
http://support.novell.com/cgi-bin/search/searchtid.cgi?/2972433.htm
http://support.novell.com/cgi-bin/search/searchtid.cgi?/2972438.htm
http://support.novell.com/cgi-bin/search/searchtid.cgi?/2972340.htm

Secunia Research:
http://secunia.com/secunia_research/2005-23/advisory/

OTHER REFERENCES:
SA13377:
http://secunia.com/advisories/13377/

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