SB2023030314 - Authenticated command execution in Barracuda CloudGen WAN

Description

This security bulletin contains information about 1 vulnerability.

1) OS Command Injection (CVE-ID: CVE-2023-26213)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the administration interface for the private edge virtual appliance. A remote user can send a specially crafted HTTP POST request to the "/ajax/update_certificate" endpoint and execute arbitrary OS commands on the target system.

Remediation

Install update from vendor's website.

References

• https://seclists.org/fulldisclosure/2023/Mar/2
• https://campus.barracuda.com/product/cloudgenwan/doc/96024723/release-notes-8-3-1/