libndp before 1.6, as used in NetworkManager, does not properly validate the origin of…
Priority MEDIUM 42CWE-284Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- High
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-284.
Summary
libndp before 1.6, as used in NetworkManager, does not properly validate the origin of Neighbor Discovery Protocol (NDP) messages, which allows remote attackers to conduct man-in-the-middle attacks or cause a denial of service (network connectivity disruption) by advertising a node as a router from a non-local network.
Why it matters now
EPSS 0.03806 90th percentileScored 2026-11-07
Fix Fixed Red Hat: 1 advisory
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 · 11
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.2:*:*:*:*:*:*:* | 7.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:* | 7.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:* | 7.2 | Vulnerable | Red Hat |
| cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* | 7.0 | Vulnerable | Red Hat |
| cpe:2.3:a:libndp:libndp:*:*:*:*:*:*:*:* | up to 1.5 | Vulnerable | Libndp |
| cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | 8.0 | Vulnerable | Debian |
| cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* | 15.10 | Vulnerable | Canonical |
- cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_server_eus:7.2:*:*:*:*:*:*:* Versions 7.2 Vulnerable ·Red Hat
- cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:* Versions 7.0 Vulnerable ·Red Hat
- cpe:2.3:a:libndp:libndp:*:*:*:*:*:*:*:* Versions up to 1.5 Vulnerable ·Libndp
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
- cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* Versions 15.10 Vulnerable ·Canonical
Remediation
Red Hat 1 advisory
- RHSA-2016:1086 Released 2016-05-17 · Red Hat rating Moderatelibndp security update
- Red Hat Enterprise Linux Client (v. 7) libndp-1.2-6.el7_2
- Red Hat Enterprise Linux Client Optional (v. 7) libndp-devel-1.2-6.el7_2
- Red Hat Enterprise Linux ComputeNode (v. 7) libndp-1.2-6.el7_2
- Red Hat Enterprise Linux ComputeNode Optional (v. 7) libndp-devel-1.2-6.el7_2
- Red Hat Enterprise Linux Server (v. 7) libndp-1.2-6.el7_2, libndp-1.2-6.el7_2.ppc
- Red Hat Enterprise Linux Server Optional (v. 7) libndp-devel-1.2-6.el7_2, libndp-devel-1.2-6.el7_2.ppc
- Red Hat Enterprise Linux Workstation (v. 7) libndp-1.2-6.el7_2
- Red Hat Enterprise Linux Workstation Optional (v. 7) libndp-devel-1.2-6.el7_2
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2016:1086 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2016:1086 |
| Red Hat Enterprise Linux ComputeNode (v. 7) | Fixed | RHSA-2016:1086 |
| Red Hat Enterprise Linux ComputeNode Optional (v. 7) | Fixed | RHSA-2016:1086 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2016:1086 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2016:1086 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2016:1086 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2016:1086 |
Timeline
- 2026-10-02 Threatist record created from CVE-2016-3698
- 2026-10-03 Alias added: GHSA-rj7j-9h37-7pw7
- 2026-10-30 EPSS moved to the 90th–95th percentile
References
Advisory 3
Other 4
- https://github.com/jpirko/libndp/commit/a4892df306e0532487f1634ba6d4c6d4bb381c7f
- https://github.com/jpirko/libndp/commit/2af9a55b38b55abbf05fd116ec097d4029115839
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- [oss-security] 20160517 RHSA-2016:1086 libndp: denial of service due to insufficient validation of source of NDP messages
Sources
- CVE-2016-3698 · CVE Program
- CVE-2016-3698 · NVD
- FIRST EPSS
- GHSA-rj7j-9h37-7pw7 · GitHub Advisory Database · CC BY 4.0
- CVE-2016-3698 · 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