high
8.6
CWE
120
Advisory Published
Updated

CVE-2024-20267

First published: Wed Feb 28 2024(Updated: )

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.

Credit: ykramarz@cisco.com

Affected SoftwareAffected VersionHow to fix
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\(6\)
Cisco NX-OS=6.0\(2\)u3\(1\)
Cisco NX-OS=6.0\(2\)u3\(2\)
Cisco NX-OS=6.0\(2\)u3\(3\)
Cisco NX-OS=6.0\(2\)u3\(4\)
Cisco NX-OS=6.0\(2\)u3\(5\)
Cisco NX-OS=6.0\(2\)u3\(6\)
Cisco NX-OS=6.0\(2\)u3\(7\)
Cisco NX-OS=6.0\(2\)u3\(8\)
Cisco NX-OS=6.0\(2\)u3\(9\)
Cisco NX-OS=6.0\(2\)u4\(1\)
Cisco NX-OS=6.0\(2\)u4\(2\)
Cisco NX-OS=6.0\(2\)u4\(3\)
Cisco NX-OS=6.0\(2\)u4\(4\)
Cisco NX-OS=6.0\(2\)u5\(1\)
Cisco NX-OS=6.0\(2\)u5\(2\)
Cisco NX-OS=6.0\(2\)u5\(3\)
Cisco NX-OS=6.0\(2\)u5\(4\)
Cisco NX-OS=6.0\(2\)u6\(1\)
Cisco NX-OS=6.0\(2\)u6\(1a\)
Cisco NX-OS=6.0\(2\)u6\(2\)
Cisco NX-OS=6.0\(2\)u6\(2a\)
Cisco NX-OS=6.0\(2\)u6\(3\)
Cisco NX-OS=6.0\(2\)u6\(3a\)
Cisco NX-OS=6.0\(2\)u6\(4\)
Cisco NX-OS=6.0\(2\)u6\(4a\)
Cisco NX-OS=6.0\(2\)u6\(5\)
Cisco NX-OS=6.0\(2\)u6\(5a\)
Cisco NX-OS=6.0\(2\)u6\(5b\)
Cisco NX-OS=6.0\(2\)u6\(5c\)
Cisco NX-OS=6.0\(2\)u6\(6\)
Cisco NX-OS=6.0\(2\)u6\(7\)
Cisco NX-OS=6.0\(2\)u6\(8\)
Cisco NX-OS=6.0\(2\)u6\(9\)
Cisco NX-OS=6.0\(2\)u6\(10\)
Cisco NX-OS=6.2\(2\)
Cisco NX-OS=6.2\(2a\)
Cisco NX-OS=6.2\(6\)
Cisco NX-OS=6.2\(6a\)
Cisco NX-OS=6.2\(6b\)
Cisco NX-OS=6.2\(8\)
Cisco NX-OS=6.2\(8a\)
Cisco NX-OS=6.2\(8b\)
Cisco NX-OS=6.2\(10\)
Cisco NX-OS=6.2\(12\)
Cisco NX-OS=6.2\(14\)
Cisco NX-OS=6.2\(16\)
Cisco NX-OS=6.2\(18\)
Cisco NX-OS=6.2\(20\)
Cisco NX-OS=6.2\(20a\)
Cisco NX-OS=6.2\(22\)
Cisco NX-OS=6.2\(24\)
Cisco NX-OS=6.2\(24a\)
Cisco NX-OS=7.0\(3\)f1\(1\)
Cisco NX-OS=7.0\(3\)f2\(1\)
Cisco NX-OS=7.0\(3\)f2\(2\)
Cisco NX-OS=7.0\(3\)f3\(1\)
Cisco NX-OS=7.0\(3\)f3\(2\)
Cisco NX-OS=7.0\(3\)f3\(3\)
Cisco NX-OS=7.0\(3\)f3\(3a\)
Cisco NX-OS=7.0\(3\)f3\(3c\)
Cisco NX-OS=7.0\(3\)f3\(4\)
Cisco NX-OS=7.0\(3\)f3\(5\)
Cisco NX-OS=7.0\(3\)i2\(1\)
Cisco NX-OS=7.0\(3\)i2\(1a\)
Cisco NX-OS=7.0\(3\)i2\(2\)
Cisco NX-OS=7.0\(3\)i2\(2a\)
Cisco NX-OS=7.0\(3\)i2\(2b\)
Cisco NX-OS=7.0\(3\)i2\(2c\)
Cisco NX-OS=7.0\(3\)i2\(2d\)
Cisco NX-OS=7.0\(3\)i2\(2e\)
Cisco NX-OS=7.0\(3\)i2\(3\)
Cisco NX-OS=7.0\(3\)i2\(4\)
Cisco NX-OS=7.0\(3\)i2\(5\)
Cisco NX-OS=7.0\(3\)i3\(1\)
Cisco NX-OS=7.0\(3\)i4\(1\)
Cisco NX-OS=7.0\(3\)i4\(2\)
Cisco NX-OS=7.0\(3\)i4\(3\)
Cisco NX-OS=7.0\(3\)i4\(4\)
Cisco NX-OS=7.0\(3\)i4\(5\)
Cisco NX-OS=7.0\(3\)i4\(6\)
Cisco NX-OS=7.0\(3\)i4\(7\)
Cisco NX-OS=7.0\(3\)i4\(8\)
Cisco NX-OS=7.0\(3\)i4\(8a\)
Cisco NX-OS=7.0\(3\)i4\(8b\)
Cisco NX-OS=7.0\(3\)i4\(8z\)
Cisco NX-OS=7.0\(3\)i4\(9\)
Cisco NX-OS=7.0\(3\)i5\(1\)
Cisco NX-OS=7.0\(3\)i5\(2\)
Cisco NX-OS=7.0\(3\)i6\(1\)
Cisco NX-OS=7.0\(3\)i6\(2\)
Cisco NX-OS=7.0\(3\)i7\(1\)
Cisco NX-OS=7.0\(3\)i7\(2\)
Cisco NX-OS=7.0\(3\)i7\(3\)
Cisco NX-OS=7.0\(3\)i7\(4\)
Cisco NX-OS=7.0\(3\)i7\(5\)
Cisco NX-OS=7.0\(3\)i7\(5a\)
Cisco NX-OS=7.0\(3\)i7\(6\)
Cisco NX-OS=7.0\(3\)i7\(7\)
Cisco NX-OS=7.0\(3\)i7\(8\)
Cisco NX-OS=7.0\(3\)i7\(9\)
Cisco NX-OS=7.0\(3\)i7\(10\)
Cisco NX-OS=7.1\(0\)n1\(1\)
Cisco NX-OS=7.1\(0\)n1\(1a\)
Cisco NX-OS=7.1\(0\)n1\(1b\)
Cisco NX-OS=7.1\(1\)n1\(1\)
Cisco NX-OS=7.1\(2\)n1\(1\)
Cisco NX-OS=7.1\(3\)n1\(1\)
Cisco NX-OS=7.1\(3\)n1\(2\)
Cisco NX-OS=7.1\(4\)n1\(1\)
Cisco NX-OS=7.1\(5\)n1\(1\)
Cisco NX-OS=7.1\(5\)n1\(1b\)
Cisco NX-OS=7.2\(0\)d1\(1\)
Cisco NX-OS=7.2\(1\)d1\(1\)
Cisco NX-OS=7.2\(2\)d1\(1\)
Cisco NX-OS=7.2\(2\)d1\(2\)
Cisco NX-OS=7.3\(0\)d1\(1\)
Cisco NX-OS=7.3\(0\)dx\(1\)
Cisco NX-OS=7.3\(0\)n1\(1\)
Cisco NX-OS=9.2\(1\)
Cisco NX-OS=9.2\(2\)
Cisco NX-OS=9.2\(2t\)
Cisco NX-OS=9.2\(2v\)
Cisco NX-OS=9.2\(3\)
Cisco NX-OS=9.2\(4\)
Cisco NX-OS=9.3\(1\)
Cisco NX-OS=9.3\(2\)
Cisco NX-OS=9.3\(3\)
Cisco NX-OS=9.3\(4\)
Cisco NX-OS=9.3\(5\)
Cisco NX-OS=9.3\(6\)
Cisco NX-OS=9.3\(7\)
Cisco NX-OS=9.3\(7a\)
Cisco NX-OS=9.3\(8\)
Cisco NX-OS=9.3\(9\)
Cisco NX-OS=9.3\(10\)
Cisco NX-OS=9.3\(11\)
Cisco NX-OS=9.3\(12\)
Cisco NX-OS=10.1\(1\)
Cisco NX-OS=10.1\(2\)
Cisco NX-OS=10.1\(2t\)
Cisco NX-OS=10.2\(1\)
Cisco NX-OS=10.2\(1q\)
Cisco NX-OS=10.2\(2\)
Cisco NX-OS=10.2\(3\)
Cisco NX-OS=10.2\(3t\)
Cisco NX-OS=10.2\(3v\)
Cisco NX-OS=10.2\(4\)
Cisco NX-OS=10.2\(5\)
Cisco NX-OS=10.2\(6\)
Cisco NX-OS=10.3\(1\)
Cisco NX-OS=10.3\(2\)
Cisco NX-OS=10.3\(3\)
Cisco NX-OS=10.3\(99w\)
Cisco NX-OS=10.3\(99x\)
Cisco NX-OS=10.4\(1\)

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Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2024-20267?

    The severity of CVE-2024-20267 is critical due to its ability to cause device reloads and network disruption.

  • How do I fix CVE-2024-20267?

    To fix CVE-2024-20267, update your Cisco NX-OS software to the latest available version that addresses this vulnerability.

  • What devices are affected by CVE-2024-20267?

    CVE-2024-20267 affects multiple versions of Cisco NX-OS software, particularly those specified in the advisory, including versions starting from 6.0.2.

  • What happens if CVE-2024-20267 is exploited?

    Exploitation of CVE-2024-20267 can lead to the netstack process restarting unexpectedly, which disrupts network traffic and may cause device reboots.

  • Is CVE-2024-20267 remotely exploitable?

    Yes, CVE-2024-20267 is remotely exploitable by unauthenticated attackers.

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