Vulnerabilities > CVE-2020-5836 - Improper Privilege Management vulnerability in Symantec Endpoint Protection 11/11.0/11.0.1
Attack vector
LOCAL Attack complexity
MEDIUM Privileges required
NONE Confidentiality impact
PARTIAL Integrity impact
PARTIAL Availability impact
PARTIAL Summary
Symantec Endpoint Protection, prior to 14.3, can potentially reset the ACLs on a file as a limited user while Symantec Endpoint Protection's Tamper Protection feature is disabled.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Restful Privilege Elevation Rest uses standard HTTP (Get, Put, Delete) style permissions methods, but these are not necessarily correlated generally with back end programs. Strict interpretation of HTTP get methods means that these HTTP Get services should not be used to delete information on the server, but there is no access control mechanism to back up this logic. This means that unless the services are properly ACL'd and the application's service implementation are following these guidelines then an HTTP request can easily execute a delete or update on the server side. The attacker identifies a HTTP Get URL such as http://victimsite/updateOrder, which calls out to a program to update orders on a database or other resource. The URL is not idempotent so the request can be submitted multiple times by the attacker, additionally, the attacker may be able to exploit the URL published as a Get method that actually performs updates (instead of merely retrieving data). This may result in malicious or inadvertent altering of data on the server.
Nessus
| NASL family | Windows |
| NASL id | SYMANTEC_ENDPOINT_PROT_CLIENT_SYM_17-062.NASL |
| description | The version of Symantec Endpoint Protection (SEP) Client installed on the remote host is prior to 14.3. It is therefore affected by the following vulnerabilities: - An elevation of privilege vulnerability exists. An authenticated, local attacker can exploit this by resetting ACLs on a file as a limited user while the tamper feature is disabled, to gain elevated privileges. (CVE-2020-5836) - An elevation of privilege vulnerability exists. An authenticated, local attacker can exploit this by by writing to log files that are replaced by symbolic links to gain elevated privileges. (CVE-2020-5837) Note that Nessus has not tested for this issue but has instead relied only on the application |
| last seen | 2020-05-21 |
| modified | 2020-05-15 |
| plugin id | 136619 |
| published | 2020-05-15 |
| reporter | This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/136619 |
| title | Symantec Endpoint Protection Client < 14.3 Multiple Vulnerabilities (SYMSA1762) |
| code | |