High [CVE-2024-7383] Libnbd: nbd server improper certificate validation
This high-severity Red Hat Linux advisory covers CVE-2024-7383 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8 Advanced Virtualization.
Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.
VulniPulse record published
Summary
A flaw was found in libnbd. The client did not always correctly verify the NBD server's certificate when using TLS to connect to an NBD server.
This issue allows a man-in-the-middle attack on NBD traffic. While this can compromise the confidentiality and integrity of resources, the vulnerability is considered to be difficult to exploit under normal circumstances.
Red Hat severity: Moderate — CVSS 7.4 (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N). Weakness: CWE-295.
Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8 Advanced Virtualization. Red Hat fixing advisory: RHSA-2024:6964, RHSA-2024:6757.
Affected products named by the advisory: Red Hat package: libnbd.
Is CVE-2024-7383 exploited?
No exploitation is reported in the sources VulniPulse tracks: CVE-2024-7383 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.
How do I fix CVE-2024-7383?
Upgrade to a fixed release named by Red Hat:
- virt-devel:rhel-8100020240905091210.489197e6
- virt:rhel-8100020240905091210.489197e6
- libnbd-0:1.18.1-4.el9_4
- RHSA-2024:6964
- RHSA-2024:6757
Confirm against the vendor advisory before you patch.
Affected versions
No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
- virt-devel:rhel-8100020240905091210.489197e6
- virt:rhel-8100020240905091210.489197e6
- libnbd-0:1.18.1-4.el9_4
- RHSA-2024:6964
- RHSA-2024:6757
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
Mitigation
Upgrade to a fixed release: virt-devel:rhel-8100020240905091210.489197e6, virt:rhel-8100020240905091210.489197e6, libnbd-0:1.18.1-4.el9_4, RHSA-2024:6964, RHSA-2024:6757. That is the remediation for this advisory.
The vendor advisory may list interim mitigations or workarounds not captured here. Review it before change work.
Official advisory · high-confidence parse· fetched 5 days ago·verify at source
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