#VU95607 Improper Certificate Validation in libnbd - CVE-2024-7383

Vulnerability identifier: #VU95607

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-7383

CWE-ID: CWE-295

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
libnbd
Universal components / Libraries / Libraries used by multiple products

Vendor: libguestfs

Description

The vulnerability allows a remote attacker to perform MitM attack.

The vulnerability exist due to improper certificate validation when handling the NBD server's certificate. A remote attacker can perform MitM attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

libnbd: 1.18.0 - 1.19.11, 1.20.0 - 1.21.0

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External links
https://access.redhat.com/security/cve/CVE-2024-7383
https://bugzilla.redhat.com/show_bug.cgi?id=2302865
https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/message/LHR3BW6RJ7K4BJBQIYV3GTZLSY27VZO2
https://lists.libguestfs.org/archives/list/guestfs@lists.libguestfs.org/thread/ENZY4LHLARA3N4C3JUNLPYUCXHFO7BWQ/

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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.