Vulnerabilities > CVE-2020-7261 - Classic Buffer Overflow vulnerability in Mcafee Endpoint Security
Attack vector
LOCAL Attack complexity
LOW Privileges required
LOW Confidentiality impact
NONE Integrity impact
HIGH Availability impact
NONE Summary
Buffer Overflow via Environment Variables vulnerability in AMSI component in McAfee Endpoint Security (ENS) Prior to 10.7.0 February 2020 Update allows local users to disable Endpoint Security via a carefully crafted user 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.
- 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 | Windows |
| NASL id | MCAFEE_ENS_SB10309.NASL |
| description | The version of the McAfee Endpoint Security (ENS) for Windows installed on the remote Windows host is 10.5.x prior to 10.5.5 Security Hotfix 129256, 10.6.x prior to 10.6.1 April 2020 Update, or 10.7.x prior to 10.7.0 April 2020 Update. It is, therefore, affected by multiple vulnerabilities: - A Symbolic link manipulation vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2020 Update allows authenticated local user to potentially gain an escalation of privileges by pointing the link to files which the user would not normally have permission to alter via carefully creating symbolic links from the ENS log file directory. (CVE-2020-7250) - A privilege escalation vulnerability in the administrative user interface in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2020 Update allows local users to gain elevated privileges due to a configuration error.Privilege escalation vulnerability in the administrative user interface in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2020 Update allows local users to gain elevated privileges via a configuration error. (CVE-2020-7255) - A privilege escalation vulnerability in McAfee Endpoint Security (ENS) for Windows prior to 10.7.0 February 2020 Update allows local users to cause the deletion and creation of files they would not normally have permission to through altering the target of symbolic links whilst an anti-virus scan was in progress. This is timing dependent. (CVE-2020-7257) It is also affected by additional vulnerabilities; see the vendor advisory for more information |
| last seen | 2020-05-16 |
| modified | 2020-04-24 |
| plugin id | 135972 |
| published | 2020-04-24 |
| reporter | This script is Copyright (C) 2020 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/135972 |
| title | McAfee Endpoint Security for Windows 10.5.x < 10.5.5 Security Hotfix 129256 / 10.6.x < 10.6.1 April 2020 Update / 10.7.x < 10.7.0 April 2020 Update Multiple Vulnerabilities (SB10309) |