Libnbd: nbd server improper certificate validation
Priority LOW 35CWE-295Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Partial Red Hat: 4 fixed, 2 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-295.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0039 33rd percentileScored 2026-11-07
Fix Partial libnbd: 1.18.5, 1.20.2Red Hat: 2 advisoriesRed Hat: 4 fixed, 2 without a fix
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | libnbd | 1.18.0 to before 1.18.5; 1.20.0 to before 1.20.2 | 1.18.5, 1.20.2 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 8100020240905091210.489197e6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 8 | — | 8100020240905091210.489197e6 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 9 | — | 1.18.1-4.el9_4 | Patch available | CNA |
| Red Hat | Red Hat Enterprise Linux 10 | — | — | No fix listed | CNA |
| Red Hat | Red Hat Enterprise Linux 8 Advanced Virtualization | — | — | No fix listed | CNA |
- libnbd Vendor— Affected 1.18.0 to before 1.18.5; 1.20.0 to before 1.20.2 Fixed in 1.18.5, 1.20.2 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 8100020240905091210.489197e6 Patch available CNA
- Red Hat Enterprise Linux 8 VendorRed Hat Affected — Fixed in 8100020240905091210.489197e6 Patch available CNA
- Red Hat Enterprise Linux 9 VendorRed Hat Affected — Fixed in 1.18.1-4.el9_4 Patch available CNA
- Red Hat Enterprise Linux 10 VendorRed Hat Affected — Fixed in — No fix listed CNA
- Red Hat Enterprise Linux 8 Advanced Virtualization VendorRed Hat Affected — Fixed in — No fix listed CNA
CPE names CNA · 6
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:/a:redhat:enterprise_linux:8::appstream | 8 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:8::crb | 8 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:9::appstream | 9 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:9::crb | 9 | — | Red Hat |
| cpe:/a:redhat:enterprise_linux:10 | 10 | — | Red Hat |
| cpe:/a:redhat:advanced_virtualization:8::el8 | 8 | — | Red Hat |
- cpe:/a:redhat:enterprise_linux:8::appstream Versions 8 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:8::crb Versions 8 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:9::appstream Versions 9 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:9::crb Versions 9 — ·Red Hat
- cpe:/a:redhat:enterprise_linux:10 Versions 10 — ·Red Hat
- cpe:/a:redhat:advanced_virtualization:8::el8 Versions 8 — ·Red Hat
Remediation
- Fix · CNA libnbd Fixed in 1.18.5, 1.20.2
Red Hat 2 advisories
- RHSA-2024:6964 Released 2024-09-24 · Red Hat rating Moderatevirt:rhel and virt-devel:rhel security update
- Red Hat Enterprise Linux AppStream (v. 8) SLOF-20210217-2.module+el8.10.0+20141+6faa2812.noarch::virt:rhel, SLOF-20210217-2.module+el8.10.0+20141+6faa2812.src::virt:rhel, hivex-1.3.18-23.module+el8.9.0+18724+20190c23.aarch64::virt:rhel +47
- Red Hat Enterprise Linux CRB (v. 8) SLOF-20210217-2.module+el8.10.0+20141+6faa2812.src::virt-devel:rhel, hivex-1.3.18-23.module+el8.9.0+18724+20190c23.i686::virt-devel:rhel, hivex-devel-1.3.18-23.module+el8.9.0+18724+20190c23.i686::virt-devel:rhel +47
- RHSA-2024:6757 Released 2024-09-18 · Red Hat rating Moderatelibnbd security update
- Red Hat Enterprise Linux AppStream (v. 9) libnbd-1.18.1-4.el9_4, libnbd-bash-completion-1.18.1-4.el9_4, nbdfuse-1.18.1-4.el9_4 +1
- Red Hat Enterprise Linux CRB (v. 9) libnbd-devel-1.18.1-4.el9_4, ocaml-libnbd-1.18.1-4.el9_4, ocaml-libnbd-devel-1.18.1-4.el9_4
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 10 | Affected | No fix yet |
| Red Hat Enterprise Linux 8 Advanced Virtualization | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2024:6964 |
| Red Hat Enterprise Linux AppStream (v. 9) | Fixed | RHSA-2024:6757 |
| Red Hat Enterprise Linux CRB (v. 8) | Fixed | RHSA-2024:6964 |
| Red Hat Enterprise Linux CRB (v. 9) | Fixed | RHSA-2024:6757 |
Timeline
- 2026-10-02 Threatist record created from CVE-2024-7383
- 2026-10-03 Alias added: GHSA-rqmr-f8r9-69wq
References
Advisory 2
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Sources
- CVE-2024-7383 · CVE Program
- CVE-2024-7383 · NVD
- FIRST EPSS
- GHSA-rqmr-f8r9-69wq · GitHub Advisory Database · CC BY 4.0
- CVE-2024-7383 · Red Hat security data · CC BY 4.0
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