#VU75538 Information disclosure in cloud-init (Ubuntu package) - CVE-2023-1786

Vulnerability identifier: #VU75538

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2023-1786

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
cloud-init (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor: Canonical Ltd.

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

cloud-init (Ubuntu package): 23.1 - 23.1.1

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External links
https://bugs.launchpad.net/cloud-init/+bug/2013967
https://ubuntu.com/security/notices/USN-6042-1
https://github.com/canonical/cloud-init/commit/a378b7e4f47375458651c0972e7cd813f6fe0a6b

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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.