Vulnerability identifier: #VU86013

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-30575

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Guacamole
Server applications / Remote management servers, RDP, SSH

Vendor:

Description

The vulnerability allows a remote user to bypass implemented security restrictions.

The vulnerability exists due to incorrectly calculate the lengths of instruction elements sent during the Guacamole protocol handshake. A remote user can pass specially crafted input to the application and inject Guacamole instructions during the handshake.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://lists.apache.org/thread/tn63n2lon0h5p45oft834t1dqvvxownv

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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