Ubuntu update for erlang

1) Missing Authentication for Critical Function

EUVDB-ID: #VU107594

Risk: Critical

CVSSv4.0: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red]

CVE-ID: CVE-2025-32433

CWE-ID: CWE-306 - Missing Authentication for Critical Function

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to missing authentication in Erlang/OTP SSH server. A remote non-authenticated attacker can send specially crafted messages to the server and execute arbitrary code on the system.

Mitigation

Update the affected package erlang to the latest version.

Vulnerable software versions

Ubuntu: 20.04 - 24.10

erlang-ssh (Ubuntu package): before 1:22.2.7+dfsg-1ubuntu0.5

erlang (Ubuntu package): before 1:22.2.7+dfsg-1ubuntu0.5

CPE2.3

• cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:22.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:24.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:24.10:*:*:*:*:*:*:*
• cpe:2.3:a:canonical:erlang-ssh_ubuntu_package:*:*:*:*:*:ubuntu:*:*
• cpe:2.3:a:canonical:erlang_ubuntu_package:*:*:*:*:*:ubuntu:*:*

External links

https://ubuntu.com/security/notices/USN-7443-1

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?

Yes. This vulnerability is being exploited in the wild.