Kerio MailServer < 6.3.1 Long LDAP Query DoS

medium Nessus Plugin ID 23868
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Synopsis

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

Description

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.

Solution

Upgrade to Kerio MailServer 6.3.1 or later.

See Also

https://www.securityfocus.com/archive/1/454455/30/0/threaded

http://forums.kerio.com/index.php?t=msg&th=10321&start=0

Plugin Details

Severity: Medium

ID: 23868

File Name: kerio_kms_631.nasl

Version: 1.15

Type: remote

Published: 12/15/2006

Updated: 11/15/2018

Dependencies: ldap_detect.nasl, smtpserver_detect.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:kerio:personal_mailserver

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 12/13/2006

Reference Information

CVE: CVE-2006-6554

BID: 21091