Vulnerabilities > CVE-2016-2204 - Injection vulnerability in Symantec Messaging Gateway 10.6.0
Attack vector
LOCAL Attack complexity
LOW Privileges required
HIGH Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
The management console on Symantec Messaging Gateway (SMG) Appliance devices before 10.6.1 allows local users to obtain root-shell access via crafted terminal-window input.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 7 |
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.
- Server Side Include (SSI) Injection An attacker can use Server Side Include (SSI) Injection to send code to a web application that then gets executed by the web server. Doing so enables the attacker to achieve similar results to Cross Site Scripting, viz., arbitrary code execution and information disclosure, albeit on a more limited scale, since the SSI directives are nowhere near as powerful as a full-fledged scripting language. Nonetheless, the attacker can conveniently gain access to sensitive files, such as password files, and execute shell commands.
- Cross Site Scripting through Log Files An attacker may leverage a system weakness where logs are susceptible to log injection to insert scripts into the system's logs. If these logs are later viewed by an administrator through a thin administrative interface and the log data is not properly HTML encoded before being written to the page, the attackers' scripts stored in the log will be executed in the administrative interface with potentially serious consequences. This attack pattern is really a combination of two other attack patterns: log injection and stored cross site scripting.
- Command Line Execution through SQL Injection An attacker uses standard SQL injection methods to inject data into the command line for execution. This could be done directly through misuse of directives such as MSSQL_xp_cmdshell or indirectly through injection of data into the database that would be interpreted as shell commands. Sometime later, an unscrupulous backend application (or could be part of the functionality of the same application) fetches the injected data stored in the database and uses this data as command line arguments without performing proper validation. The malicious data escapes that data plane by spawning new commands to be executed on the host.
- Subverting Environment Variable Values The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
Nessus
| NASL family | CGI abuses |
| NASL id | SYMANTEC_MESSAGING_GATEWAY_SYM16-005.NASL |
| description | According to its self-reported version number, the Symantec Messaging Gateway (SMG) running on the remote host is 10.x prior to 10.6.1. It is, therefore, affected by multiple vulnerabilities : - A privilege escalation vulnerability exists in the SMG management console due to AD password information being insecurely stored and encrypted. A local attacker who has read-level access can exploit this, by reverse engineering the encrypted AD password, to gain unauthorized, elevated access to additional resources on the network. Note that recovery of this password would not provide any additional access to the SMG appliance itself. (CVE-2016-2203) - A privilege escalation vulnerability exists due to an unspecified flaw in the SMG management console. A local attacker can exploit this, by manipulating code input to the terminal window, to gain access to the privileged root shell of the console. (CVE-2016-2204) Note that Nessus has not tested for these issues but has instead relied only on the application |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 90919 |
| published | 2016-05-05 |
| reporter | This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/90919 |
| title | Symantec Messaging Gateway 10.x < 10.6.1 Management Console Multiple Vulnerabilities (SYM16-005) |
| code | |