CVE-2024-20267
Last modified
CVE-2024-20267 is a high-severity vulnerability rated 8.6/10 on the CVSS scale. A vulnerability with the handling of MPLS traffic for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the netstack process to unexpectedly restart, which could cause the device to stop processing network traffic or to reload. This vulnerability is due to lack of proper error checking when processing an ingress MPLS frame. EPSS estimates a 0.93% chance of exploitation in the next 30 days.
Description
A vulnerability with the handling of MPLS traffic for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the netstack process to unexpectedly restart, which could cause the device to stop processing network traffic or to reload. This vulnerability is due to lack of proper error checking when processing an ingress MPLS frame. An attacker could exploit this vulnerability by sending a crafted IPv6 packet that is encapsulated within an MPLS frame to an MPLS-enabled interface of the targeted device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition. Note: The IPv6 packet can be generated multiple hops away from the targeted device and then encapsulated within MPLS. The DoS condition may occur when the NX-OS device processes the packet.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Nx-Os | 6.0\(2\)a3\(1\) |
| Cisco | Nx-Os | 6.0\(2\)a3\(2\) |
| Cisco | Nx-Os | 6.0\(2\)a3\(4\) |
| Cisco | Nx-Os | 6.0\(2\)a4\(1\) |
| Cisco | Nx-Os | 6.0\(2\)a4\(2\) |
| Cisco | Nx-Os | 6.0\(2\)a4\(3\) |
| Cisco | Nx-Os | 6.0\(2\)a4\(4\) |
| Cisco | Nx-Os | 6.0\(2\)a4\(5\) |
| Cisco | Nx-Os | 6.0\(2\)a4\(6\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(1\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(1a\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(2\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(2a\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(3\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(3a\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(4\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(4a\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(5\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(5a\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(5b\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(6\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(7\) |
| Cisco | Nx-Os | 6.0\(2\)a6\(8\) |
| Cisco | Nx-Os | 6.0\(2\)a7\(1\) |
| Cisco | Nx-Os | 6.0\(2\)a7\(1a\) |
| Cisco | Nx-Os | 6.0\(2\)a7\(2\) |
| Cisco | Nx-Os | 6.0\(2\)a7\(2a\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(1\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(2\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(3\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(4\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(4a\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(5\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(6\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(7\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(7a\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(7b\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(8\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(9\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(10\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(10a\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(11\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(11a\) |
| Cisco | Nx-Os | 6.0\(2\)a8\(11b\) |
| Cisco | Nx-Os | 6.0\(2\)u2\(1\) |
| Cisco | Nx-Os | 6.0\(2\)u2\(2\) |
| Cisco | Nx-Os | 6.0\(2\)u2\(3\) |
| Cisco | Nx-Os | 6.0\(2\)u2\(4\) |
| Cisco | Nx-Os | 6.0\(2\)u2\(5\) |
| Cisco | Nx-Os | 6.0\(2\)u2\(6\) |
Showing 50 of 205 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Modified
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How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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