Weak encryption in FreeBSD GELI

1) Missing Encryption of Sensitive Data

EUVDB-ID: #VU72070

Risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-0751

CWE-ID: CWE-311 - Missing Encryption of Sensitive Data

Exploit availability: No

Description

The vulnerability allows a local user to gain access to sensitive information.

The vulnerability exists due to an error in GELI when reading a key file from a standard output. As a result, some GELI providers might be silently encrypted with a NULL key file.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

FreeBSD: 12.0 - 13.1

CPE2.3

• cpe:2.3:o:freebsd_foundation:freebsd:12.0:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd_foundation:freebsd:12.1:*:*:*:*:*:*:*
• cpe:2.3:o:freebsd_foundation:freebsd:12.2-RELEASE-p6:*:*:*:*:*:*:*

External links

https://www.freebsd.org/security/advisories/FreeBSD-SA-23:01.geli.asc

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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