#VU76500 OS Command Injection in Email Security Gateway (ESG) - CVE-2023-2868
Published: May 25, 2023 / Updated: June 21, 2024
Vulnerability identifier: #VU76500
Vulnerability risk: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2023-2868
CWE-ID: CWE-78
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
Email Security Gateway (ESG)
Email Security Gateway (ESG)
Software vendor:
Barracuda Networks
Barracuda Networks
Description
The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation when processing .tar archives during email attachment screening. A remote unauthenticated attacker can send a specially crafted email with a malicious attachment to the appliance and execute arbitrary Perl commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install update from vendor's website.