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TITLE:
RevilloC MailServer "RCPT TO:" Buffer Overflow Vulnerability

SECUNIA ADVISORY ID:
SA22559

VERIFY ADVISORY:
http://secunia.com/advisories/22559/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

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

DESCRIPTION:
Greg Linares 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 arguments passed to the "RCPT TO:" command. This can be
exploited to cause a heap-based buffer overflow by supplying an
overly long argument to the vulnerable command (more than 4000
bytes).

Successful exploitation may allow execution of arbitrary code.

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

SOLUTION:
Filter traffic to the SMTP service.

Use another product.

PROVIDED AND/OR DISCOVERED BY:
Greg Linares

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About:
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