Vulnerabilities > CVE-2006-5176 - Improper Restriction of Operations Within the Bounds of A Memory Buffer vulnerability in Mailenable Enterprise and Mailenable Professional
Attack vector
NETWORK Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
COMPLETE Integrity impact
COMPLETE Availability impact
COMPLETE Summary
Buffer overflow in NTLM authentication in MailEnable Professional 2.0 and Enterprise 2.0 allows remote attackers to execute arbitrary code via "the signature field of NTLM Type 1 messages". Hotfixes are available on the vendor web site that address this and related vulnerabilities.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 2 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Buffer Overflow via Environment Variables This attack pattern involves causing a buffer overflow through manipulation of environment variables. Once the attacker finds that they can modify an environment variable, they may try to overflow associated buffers. This attack leverages implicit trust often placed in environment variables.
- Overflow Buffers Buffer Overflow attacks target improper or missing bounds checking on buffer operations, typically triggered by input injected by an attacker. As a consequence, an attacker is able to write past the boundaries of allocated buffer regions in memory, causing a program crash or potentially redirection of execution as per the attackers' choice.
- Client-side Injection-induced Buffer Overflow This type of attack exploits a buffer overflow vulnerability in targeted client software through injection of malicious content from a custom-built hostile service.
- Filter Failure through Buffer Overflow In this attack, the idea is to cause an active filter to fail by causing an oversized transaction. An attacker may try to feed overly long input strings to the program in an attempt to overwhelm the filter (by causing a buffer overflow) and hoping that the filter does not fail securely (i.e. the user input is let into the system unfiltered).
- MIME Conversion An attacker exploits a weakness in the MIME conversion routine to cause a buffer overflow and gain control over the mail server machine. The MIME system is designed to allow various different information formats to be interpreted and sent via e-mail. Attack points exist when data are converted to MIME compatible format and back.
Nessus
| NASL family | SMTP problems |
| NASL id | MAILENABLE_SMTP_NTLM_FLAWS.NASL |
| description | The remote host is running MailEnable, a commercial mail server for Windows. The version of MailEnable Professional or MailEnable Enterprise installed on the remote host has several problems involving its support of NTLM authentication. A remote, unauthenticated attacker can leverage these flaws to execute arbitrary code on the remote host or crash the SMTP connector. Note that NTLM authentication is not enabled in MailEnable by default but is on the remote host. |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 22483 |
| published | 2006-10-02 |
| reporter | This script is Copyright (C) 2006-2018 Tenable Network Security, Inc. |
| source | https://www.tenable.com/plugins/nessus/22483 |
| title | MailEnable SMTP Connector Multiple NTLM Authentication Vulnerabilities |
| code | |