Vulnerabilities > CVE-2015-8151 - OS Command Injection vulnerability in Symantec Encryption Management Server 3.3.2
Attack vector
NETWORK Attack complexity
LOW Privileges required
HIGH Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Symantec Encryption Management Server (SEMS) 3.3.2 before MP12 allows remote authenticated users to execute arbitrary OS commands by leveraging console administrator access.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 1 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- 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.
- Command Delimiters An attack of this type exploits a programs' vulnerabilities that allows an attacker's commands to be concatenated onto a legitimate command with the intent of targeting other resources such as the file system or database. The system that uses a filter or a blacklist input validation, as opposed to whitelist validation is vulnerable to an attacker who predicts delimiters (or combinations of delimiters) not present in the filter or blacklist. As with other injection attacks, the attacker uses the command delimiter payload as an entry point to tunnel through the application and activate additional attacks through SQL queries, shell commands, network scanning, and so on.
- Exploiting Multiple Input Interpretation Layers An attacker supplies the target software with input data that contains sequences of special characters designed to bypass input validation logic. This exploit relies on the target making multiples passes over the input data and processing a "layer" of special characters with each pass. In this manner, the attacker can disguise input that would otherwise be rejected as invalid by concealing it with layers of special/escape characters that are stripped off by subsequent processing steps. The goal is to first discover cases where the input validation layer executes before one or more parsing layers. That is, user input may go through the following logic in an application: In such cases, the attacker will need to provide input that will pass through the input validator, but after passing through parser2, will be converted into something that the input validator was supposed to stop.
- Argument Injection An attacker changes the behavior or state of a targeted application through injecting data or command syntax through the targets use of non-validated and non-filtered arguments of exposed services or methods.
- OS Command Injection In this type of an attack, an adversary injects operating system commands into existing application functions. An application that uses untrusted input to build command strings is vulnerable. An adversary can leverage OS command injection in an application to elevate privileges, execute arbitrary commands and compromise the underlying operating system.
Nessus
| NASL family | Misc. |
| NASL id | SYMANTEC_ENCRYPTION_SERVER_SYM16-002.NASL |
| description | The version of Symantec Encryption Management Server running on the remote host is 3.3.2 prior to version 3.3.2 MP12. It is, therefore, affected by multiple vulnerabilities : - An unspecified flaw in the LDAP service allows a remote attacker, via a crafted LDAP request, to gather sensitive information about valid administrator accounts on the server. (CVE-2015-8148) - A denial of service exists in the LDAP service due to a failure to properly validate user-supplied input. An unauthenticated, remote attacker can exploit this, via crafted request packets, to cause corrupted memory block headers, leading to a SIGSEGV fault and resulting in a service halt. (CVE-2015-8149) - An unspecified flaw exists that is related to scheduling commands to run via existing batch files, which normally run with root privileges. A local attacker can exploit this to gain elevated privileges on the server. (CVE-2015-8150) - A command injection vulnerability exists in the web user interface due to a failure to properly sanitize certain user-supplied input fields. An authenticated, remote attacker can exploit this to run arbitrary commands with elevated privileges on the underlying operating system. (CVE-2015-8151) |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 88903 |
| published | 2016-02-23 |
| 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/88903 |
| title | Symantec Encryption Management Server 3.3.2 < 3.3.2 MP12 Multiple Vulnerabilities (SYM16-002) |
| code | |