Usage of weak encryption in Mumble

1) Cryptographic issues

EUVDB-ID: #VU31795

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

The vulnerability allows a remote attacker to preform MitM attack.

The vulnerability exists due to usage of photographically weak OCB2 encryption. A remote attacker can intercept data and decrypt it.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

mumble: 1.1.8 - 1.3.1 rc1

CPE2.3

• cpe:2.3:a:mumble-voip:mumble:1.1.8:*:*:*:*:*:*:*
• cpe:2.3:a:mumble-voip:mumble:1.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:mumble-voip:mumble:1.2.1:*:*:*:*:*:*:*

External links

https://github.com/mumble-voip/mumble/issues/4219

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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