CVE-2017-6327: Symantec Messaging Gateway Remote Code Execution Vulnerability

Vulnerability summary

CVE-2017-6327 is a high (CVSS 8.8) Command Injection vulnerability in Symantec Symantec Messaging Gateway. It is known to be exploited: CISA lists it, first on 03-11-2021. EPSS estimates a 35.91% chance of exploitation in the next 30 days, higher than 98.4% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 11-08-2017
   PublishedVulnerability first disclosed.
2. 03-11-2021
   Added to CISA KEVSymantec Messaging Gateway Remote Code Execution Vulnerability
3. 03-05-2022
   CISA remediation dueApply updates per vendor instructions.
4. 21-10-2025
   Last modifiedVulnerability information updated.

Description

The Symantec Messaging Gateway before 10.6.3-267 can encounter an issue of remote code execution, which describes a situation whereby an individual may obtain the ability to execute commands remotely on a target machine or in a target process. In this type of occurrence, after gaining access to the system, the attacker may attempt to elevate their privileges.

• CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.