Vulnerability identifier: #VU72736

Vulnerability risk: Low

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-26213

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Barracuda CloudGen WAN
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Barracuda Networks

Description

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.

Mitigation

Install updates from vendor's website:

https://dlportal.barracudanetworks.com/#/packages/5560/webui-sdwan-1089-8.3.1-174141891.tgz

Vulnerable software versions

Barracuda CloudGen WAN: 8.1.0 - 8.3.1 1088

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

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.