[SA19119] RevilloC MailServer USER Command Buffer Overflow

TITLE:
RevilloC MailServer USER Command Buffer Overflow

SECUNIA ADVISORY ID:
SA19119

VERIFY ADVISORY:
http://secunia.com/advisories/19119/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
RevilloC MailServer 1.x
http://secunia.com/product/8596/

DESCRIPTION:
securma massine has discovered a vulnerability in RevilloC
MailServer, which potentially can be exploited by malicious people to
compromise a vulnerable system.

The vulnerability is caused due to a boundary error within the
handling of the POP3 USER command. This can be exploited to cause a
heap-based buffer overflow and may allow arbitrary code execution via
an overly long user name passed to the command.

The vulnerability has been confirmed in version 1.21. Other versions
may also be affected.

SOLUTION:
Restrict access to affected systems using a firewall.

PROVIDED AND/OR DISCOVERED BY:
securma massine

ORIGINAL ADVISORY:
http://www.morx.org/rev.txt

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/

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