Authenticated command execution in Barracuda CloudGen WAN



Published: 2023-03-03
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-26213
CWE-ID CWE-78
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Barracuda CloudGen WAN
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor Barracuda Networks

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) OS Command Injection

EUVDB-ID: #VU72736

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 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

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

External links

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


Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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