Kerio MailServer < 6.3.1 Long LDAP Query DoS

Medium Nessus Plugin ID 23868


The remote LDAP server is prone to a denial of service attack.


The remote host is running Kerio MailServer, a commercial mail server available for Windows, Linux, and Mac OS X platforms.

According to its banner, the LDAP service associated with the installed version of Kerio MailServer terminates abnormally when it receives certain malformed LDAP search requests. An unauthenticated, remote attacker can exploit this issue to deny access to legitimate users.


Upgrade to Kerio MailServer 6.3.1 or later.

See Also

Plugin Details

Severity: Medium

ID: 23868

File Name: kerio_kms_631.nasl

Version: $Revision: 1.13 $

Type: remote

Published: 2006/12/15

Modified: 2012/08/16

Dependencies: 20870, 10263

Risk Information

Risk Factor: Medium


Base Score: 5

Temporal Score: 4.1

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:kerio:personal_mailserver

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2006/12/13

Reference Information

CVE: CVE-2006-6554

BID: 21091

OSVDB: 32261