The modern style negotiation in Network Block Device (nbd-server) 2.9.22 through 3.3…
Priority MEDIUM 40CWE-399Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- — Not recorded in CVSS 2.0
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · Complete
- Fix status
- No fix listed
Attack profile from CVSS 2.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
The modern style negotiation in Network Block Device (nbd-server) 2.9.22 through 3.3 allows remote attackers to cause a denial of service (root process termination) by (1) closing the connection during negotiation or (2) specifying a name for a non-existent export.
Why it matters now
EPSS 0.03719 89th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 16
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wouter_verhelst:nbd:2.9.3:*:*:*:*:*:*:* | 2.9.3 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:2.9.4:*:*:*:*:*:*:* | 2.9.4 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:2.9.5:*:*:*:*:*:*:* | 2.9.5 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:2.9.6:*:*:*:*:*:*:* | 2.9.6 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:2.9.7:*:*:*:*:*:*:* | 2.9.7 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:2.9.8:*:*:*:*:*:*:* | 2.9.8 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:2.9.9:*:*:*:*:*:*:* | 2.9.9 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:2.9.22:*:*:*:*:*:*:* | 2.9.22 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:2.9.23:*:*:*:*:*:*:* | 2.9.23 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:2.9.24:*:*:*:*:*:*:* | 2.9.24 | Vulnerable | Wouter Verhelst |
- cpe:2.3:a:wouter_verhelst:nbd:2.9.3:*:*:*:*:*:*:* Versions 2.9.3 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:2.9.4:*:*:*:*:*:*:* Versions 2.9.4 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:2.9.5:*:*:*:*:*:*:* Versions 2.9.5 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:2.9.6:*:*:*:*:*:*:* Versions 2.9.6 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:2.9.7:*:*:*:*:*:*:* Versions 2.9.7 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:2.9.8:*:*:*:*:*:*:* Versions 2.9.8 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:2.9.9:*:*:*:*:*:*:* Versions 2.9.9 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:2.9.22:*:*:*:*:*:*:* Versions 2.9.22 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:2.9.23:*:*:*:*:*:*:* Versions 2.9.23 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:2.9.24:*:*:*:*:*:*:* Versions 2.9.24 Vulnerable ·Wouter Verhelst
Show 6 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:wouter_verhelst:nbd:2.9.25:*:*:*:*:*:*:* | 2.9.25 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:3.0:*:*:*:*:*:*:* | 3.0 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:3.1:*:*:*:*:*:*:* | 3.1 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:3.1.1:*:*:*:*:*:*:* | 3.1.1 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:3.2:*:*:*:*:*:*:* | 3.2 | Vulnerable | Wouter Verhelst |
| cpe:2.3:a:wouter_verhelst:nbd:3.3:*:*:*:*:*:*:* | 3.3 | Vulnerable | Wouter Verhelst |
- cpe:2.3:a:wouter_verhelst:nbd:2.9.25:*:*:*:*:*:*:* Versions 2.9.25 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:3.0:*:*:*:*:*:*:* Versions 3.0 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:3.1:*:*:*:*:*:*:* Versions 3.1 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:3.1.1:*:*:*:*:*:*:* Versions 3.1.1 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:3.2:*:*:*:*:*:*:* Versions 3.2 Vulnerable ·Wouter Verhelst
- cpe:2.3:a:wouter_verhelst:nbd:3.3:*:*:*:*:*:*:* Versions 3.3 Vulnerable ·Wouter Verhelst
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Timeline
- 2026-10-02 Threatist record created from CVE-2013-7441
- 2026-10-03 Alias added: GHSA-jrr7-3c28-9wx3
References
Advisory 3
Other 5
- [oss-security] 20150519 CVE Request: nbd denial of service
- [oss-security] 20150521 Re: CVE Request: nbd denial of service
- [Nbd] 20130128 NBD server terminates on SIGPIPE during negotiation
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=781547
- https://github.com/yoe/nbd/commit/741495cb08503fd32a9d22648e63b64390c601f4
More Wouter Verhelst Nbd vulnerabilities
- TI-2005-03357 Buffer overflow in the Network Block Device (nbd) server 2.7.5 and earlier, and 2.8.0… CVSS 2.0HIGH 7.5
- TI-2011-00457 Buffer overflow in the mainloop function in nbd-server.c in the server in Network Block… CVSS 2.0HIGH 7.5
- TI-2015-00788 nbd-server.c in Network Block Device (nbd-server) before 3.11 does not properly handle… CVSS 2.0HIGH 7.8
- TI-2013-05364 nbd-server in Network Block Device (nbd) before 3.5 does not properly check IP addresses… CVSS 2.0HIGH 7.5
- TI-2011-01697 nbd-server.c in Network Block Device (nbd-server) 2.9.21 allows remote attackers to cause… CVSS 2.0MEDIUM 5.0
Sources
- CVE-2013-7441 · CVE Program
- CVE-2013-7441 · NVD
- FIRST EPSS
- GHSA-jrr7-3c28-9wx3 · GitHub Advisory Database · CC BY 4.0
- CVE-2013-7441 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences