{"id":"CVE-2024-20267","state":"PUBLISHED","title":"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, wh","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. \r\n\r 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.\r\n\r 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.","publishedAt":"2024-02-28T16:15:18.044Z","updatedAt":"2024-08-28T14:13:57.631Z","severity":{"score":8.6,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H","source":"cisco"},"assigner":"cisco","products":["Cisco Cisco NX-OS Software"],"affected":[{"vendor":"Cisco","product":"Cisco NX-OS Software","versions":[{"version":"6.0(2)A3(1)","status":"affected"},{"version":"6.0(2)A3(2)","status":"affected"},{"version":"6.0(2)A3(4)","status":"affected"},{"version":"6.0(2)A4(1)","status":"affected"},{"version":"6.0(2)A4(2)","status":"affected"},{"version":"6.0(2)A4(3)","status":"affected"},{"version":"6.0(2)A4(4)","status":"affected"},{"version":"6.0(2)A4(5)","status":"affected"},{"version":"6.0(2)A4(6)","status":"affected"},{"version":"6.0(2)A6(1)","status":"affected"},{"version":"6.0(2)A6(1a)","status":"affected"},{"version":"6.0(2)A6(2)","status":"affected"},{"version":"6.0(2)A6(2a)","status":"affected"},{"version":"6.0(2)A6(3)","status":"affected"},{"version":"6.0(2)A6(3a)","status":"affected"},{"version":"6.0(2)A6(4)","status":"affected"},{"version":"6.0(2)A6(4a)","status":"affected"},{"version":"6.0(2)A6(5)","status":"affected"},{"version":"6.0(2)A6(5a)","status":"affected"},{"version":"6.0(2)A6(5b)","status":"affected"},{"version":"6.0(2)A6(6)","status":"affected"},{"version":"6.0(2)A6(7)","status":"affected"},{"version":"6.0(2)A6(8)","status":"affected"},{"version":"6.0(2)A7(1)","status":"affected"},{"version":"6.0(2)A7(1a)","status":"affected"},{"version":"6.0(2)A7(2)","status":"affected"},{"version":"6.0(2)A7(2a)","status":"affected"},{"version":"6.0(2)A8(1)","status":"affected"},{"version":"6.0(2)A8(2)","status":"affected"},{"version":"6.0(2)A8(3)","status":"affected"},{"version":"6.0(2)A8(4)","status":"affected"},{"version":"6.0(2)A8(4a)","status":"affected"},{"version":"6.0(2)A8(5)","status":"affected"},{"version":"6.0(2)A8(6)","status":"affected"},{"version":"6.0(2)A8(7)","status":"affected"},{"version":"6.0(2)A8(7a)","status":"affected"},{"version":"6.0(2)A8(7b)","status":"affected"},{"version":"6.0(2)A8(8)","status":"affected"},{"version":"6.0(2)A8(9)","status":"affected"},{"version":"6.0(2)A8(10a)","status":"affected"},{"version":"6.0(2)A8(10)","status":"affected"},{"version":"6.0(2)A8(11)","status":"affected"},{"version":"6.0(2)A8(11a)","status":"affected"},{"version":"6.0(2)A8(11b)","status":"affected"},{"version":"6.0(2)U2(1)","status":"affected"},{"version":"6.0(2)U2(2)","status":"affected"},{"version":"6.0(2)U2(3)","status":"affected"},{"version":"6.0(2)U2(4)","status":"affected"},{"version":"6.0(2)U2(5)","status":"affected"},{"version":"6.0(2)U2(6)","status":"affected"},{"version":"6.0(2)U3(1)","status":"affected"},{"version":"6.0(2)U3(2)","status":"affected"},{"version":"6.0(2)U3(3)","status":"affected"},{"version":"6.0(2)U3(4)","status":"affected"},{"version":"6.0(2)U3(5)","status":"affected"},{"version":"6.0(2)U3(6)","status":"affected"},{"version":"6.0(2)U3(7)","status":"affected"},{"version":"6.0(2)U3(8)","status":"affected"},{"version":"6.0(2)U3(9)","status":"affected"},{"version":"6.0(2)U4(1)","status":"affected"},{"version":"6.0(2)U4(2)","status":"affected"},{"version":"6.0(2)U4(3)","status":"affected"},{"version":"6.0(2)U4(4)","status":"affected"},{"version":"6.0(2)U5(1)","status":"affected"},{"version":"6.0(2)U5(2)","status":"affected"},{"version":"6.0(2)U5(3)","status":"affected"},{"version":"6.0(2)U5(4)","status":"affected"},{"version":"6.0(2)U6(1)","status":"affected"},{"version":"6.0(2)U6(2)","status":"affected"},{"version":"6.0(2)U6(3)","status":"affected"},{"version":"6.0(2)U6(4)","status":"affected"},{"version":"6.0(2)U6(5)","status":"affected"},{"version":"6.0(2)U6(6)","status":"affected"},{"version":"6.0(2)U6(7)","status":"affected"},{"version":"6.0(2)U6(8)","status":"affected"},{"version":"6.0(2)U6(1a)","status":"affected"},{"version":"6.0(2)U6(2a)","status":"affected"},{"version":"6.0(2)U6(3a)","status":"affected"},{"version":"6.0(2)U6(4a)","status":"affected"},{"version":"6.0(2)U6(5a)","status":"affected"},{"version":"6.0(2)U6(5b)","status":"affected"},{"version":"6.0(2)U6(5c)","status":"affected"},{"version":"6.0(2)U6(9)","status":"affected"},{"version":"6.0(2)U6(10)","status":"affected"},{"version":"6.2(2)","status":"affected"},{"version":"6.2(2a)","status":"affected"},{"version":"6.2(6)","status":"affected"},{"version":"6.2(6b)","status":"affected"},{"version":"6.2(8)","status":"affected"},{"version":"6.2(8a)","status":"affected"},{"version":"6.2(8b)","status":"affected"},{"version":"6.2(10)","status":"affected"},{"version":"6.2(12)","status":"affected"},{"version":"6.2(18)","status":"affected"},{"version":"6.2(16)","status":"affected"},{"version":"6.2(14)","status":"affected"},{"version":"6.2(6a)","status":"affected"},{"version":"6.2(20)","status":"affected"},{"version":"6.2(20a)","status":"affected"},{"version":"6.2(22)","status":"affected"},{"version":"6.2(24)","status":"affected"},{"version":"6.2(24a)","status":"affected"},{"version":"7.0(3)F1(1)","status":"affected"},{"version":"7.0(3)F2(1)","status":"affected"},{"version":"7.0(3)F2(2)","status":"affected"},{"version":"7.0(3)F3(1)","status":"affected"},{"version":"7.0(3)F3(2)","status":"affected"},{"version":"7.0(3)F3(3)","status":"affected"},{"version":"7.0(3)F3(3a)","status":"affected"},{"version":"7.0(3)F3(4)","status":"affected"},{"version":"7.0(3)F3(3c)","status":"affected"},{"version":"7.0(3)F3(5)","status":"affected"},{"version":"7.0(3)I2(2a)","status":"affected"},{"version":"7.0(3)I2(2b)","status":"affected"},{"version":"7.0(3)I2(2c)","status":"affected"},{"version":"7.0(3)I2(2d)","status":"affected"},{"version":"7.0(3)I2(2e)","status":"affected"},{"version":"7.0(3)I2(3)","status":"affected"},{"version":"7.0(3)I2(4)","status":"affected"},{"version":"7.0(3)I2(5)","status":"affected"},{"version":"7.0(3)I2(1)","status":"affected"},{"version":"7.0(3)I2(1a)","status":"affected"},{"version":"7.0(3)I2(2)","status":"affected"},{"version":"7.0(3)I3(1)","status":"affected"},{"version":"7.0(3)I4(1)","status":"affected"},{"version":"7.0(3)I4(2)","status":"affected"},{"version":"7.0(3)I4(3)","status":"affected"},{"version":"7.0(3)I4(4)","status":"affected"},{"version":"7.0(3)I4(5)","status":"affected"},{"version":"7.0(3)I4(6)","status":"affected"},{"version":"7.0(3)I4(7)","status":"affected"},{"version":"7.0(3)I4(8)","status":"affected"},{"version":"7.0(3)I4(8a)","status":"affected"},{"version":"7.0(3)I4(8b)","status":"affected"},{"version":"7.0(3)I4(8z)","status":"affected"},{"version":"7.0(3)I4(9)","status":"affected"},{"version":"7.0(3)I5(1)","status":"affected"},{"version":"7.0(3)I5(2)","status":"affected"},{"version":"7.0(3)I6(1)","status":"affected"},{"version":"7.0(3)I6(2)","status":"affected"},{"version":"7.0(3)I7(1)","status":"affected"},{"version":"7.0(3)I7(2)","status":"affected"},{"version":"7.0(3)I7(3)","status":"affected"},{"version":"7.0(3)I7(4)","status":"affected"},{"version":"7.0(3)I7(5)","status":"affected"},{"version":"7.0(3)I7(5a)","status":"affected"},{"version":"7.0(3)I7(6)","status":"affected"},{"version":"7.0(3)I7(7)","status":"affected"},{"version":"7.0(3)I7(8)","status":"affected"},{"version":"7.0(3)I7(9)","status":"affected"},{"version":"7.0(3)I7(10)","status":"affected"},{"version":"7.1(0)N1(1a)","status":"affected"},{"version":"7.1(0)N1(1b)","status":"affected"},{"version":"7.1(0)N1(1)","status":"affected"},{"version":"7.1(1)N1(1)","status":"affected"},{"version":"7.1(2)N1(1)","status":"affected"},{"version":"7.1(3)N1(1)","status":"affected"},{"version":"7.1(3)N1(2)","status":"affected"},{"version":"7.1(4)N1(1)","status":"affected"},{"version":"7.1(5)N1(1)","status":"affected"},{"version":"7.1(5)N1(1b)","status":"affected"},{"version":"7.2(0)D1(1)","status":"affected"},{"version":"7.2(1)D1(1)","status":"affected"},{"version":"7.2(2)D1(2)","status":"affected"},{"version":"7.2(2)D1(1)","status":"affected"},{"version":"7.3(0)D1(1)","status":"affected"},{"version":"7.3(0)DX(1)","status":"affected"},{"version":"7.3(0)N1(1)","status":"affected"},{"version":"9.2(1)","status":"affected"},{"version":"9.2(2)","status":"affected"},{"version":"9.2(2t)","status":"affected"},{"version":"9.2(3)","status":"affected"},{"version":"9.2(4)","status":"affected"},{"version":"9.2(2v)","status":"affected"},{"version":"9.3(1)","status":"affected"},{"version":"9.3(2)","status":"affected"},{"version":"9.3(3)","status":"affected"},{"version":"9.3(4)","status":"affected"},{"version":"9.3(5)","status":"affected"},{"version":"9.3(6)","status":"affected"},{"version":"9.3(7)","status":"affected"},{"version":"9.3(7a)","status":"affected"},{"version":"9.3(8)","status":"affected"},{"version":"9.3(9)","status":"affected"},{"version":"9.3(10)","status":"affected"},{"version":"9.3(11)","status":"affected"},{"version":"9.3(12)","status":"affected"},{"version":"10.1(1)","status":"affected"},{"version":"10.1(2)","status":"affected"},{"version":"10.1(2t)","status":"affected"},{"version":"10.2(1)","status":"affected"},{"version":"10.2(1q)","status":"affected"},{"version":"10.2(2)","status":"affected"},{"version":"10.2(3)","status":"affected"},{"version":"10.2(3t)","status":"affected"},{"version":"10.2(4)","status":"affected"},{"version":"10.2(5)","status":"affected"},{"version":"10.2(3v)","status":"affected"},{"version":"10.2(6)","status":"affected"},{"version":"10.3(1)","status":"affected"},{"version":"10.3(2)","status":"affected"},{"version":"10.3(3)","status":"affected"},{"version":"10.3(99w)","status":"affected"},{"version":"10.3(99x)","status":"affected"},{"version":"10.4(1)","status":"affected"}]}],"references":["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ipv6-mpls-dos-R9ycXkwM"],"weaknesses":["CWE-120"],"ingestedAt":"2026-10-29T20:06:59.846Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2024/20xxx/CVE-2024-20267.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-20267","state":"PUBLISHED","datePublished":"2024-02-28T16:15:18.044Z","dateUpdated":"2024-08-28T14:13:57.631Z","assignerShortName":"cisco","assignerOrgId":"d1c1063e-7a18-46af-9102-31f8928bc633","dateReserved":"2023-11-08T15:08:07.624Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"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. \r\n\r 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.\r\n\r 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."}],"affected":[{"vendor":"Cisco","product":"Cisco NX-OS Software","versions":[{"version":"6.0(2)A3(1)","status":"affected"},{"version":"6.0(2)A3(2)","status":"affected"},{"version":"6.0(2)A3(4)","status":"affected"},{"version":"6.0(2)A4(1)","status":"affected"},{"version":"6.0(2)A4(2)","status":"affected"},{"version":"6.0(2)A4(3)","status":"affected"},{"version":"6.0(2)A4(4)","status":"affected"},{"version":"6.0(2)A4(5)","status":"affected"},{"version":"6.0(2)A4(6)","status":"affected"},{"version":"6.0(2)A6(1)","status":"affected"},{"version":"6.0(2)A6(1a)","status":"affected"},{"version":"6.0(2)A6(2)","status":"affected"},{"version":"6.0(2)A6(2a)","status":"affected"},{"version":"6.0(2)A6(3)","status":"affected"},{"version":"6.0(2)A6(3a)","status":"affected"},{"version":"6.0(2)A6(4)","status":"affected"},{"version":"6.0(2)A6(4a)","status":"affected"},{"version":"6.0(2)A6(5)","status":"affected"},{"version":"6.0(2)A6(5a)","status":"affected"},{"version":"6.0(2)A6(5b)","status":"affected"},{"version":"6.0(2)A6(6)","status":"affected"},{"version":"6.0(2)A6(7)","status":"affected"},{"version":"6.0(2)A6(8)","status":"affected"},{"version":"6.0(2)A7(1)","status":"affected"},{"version":"6.0(2)A7(1a)","status":"affected"},{"version":"6.0(2)A7(2)","status":"affected"},{"version":"6.0(2)A7(2a)","status":"affected"},{"version":"6.0(2)A8(1)","status":"affected"},{"version":"6.0(2)A8(2)","status":"affected"},{"version":"6.0(2)A8(3)","status":"affected"},{"version":"6.0(2)A8(4)","status":"affected"},{"version":"6.0(2)A8(4a)","status":"affected"},{"version":"6.0(2)A8(5)","status":"affected"},{"version":"6.0(2)A8(6)","status":"affected"},{"version":"6.0(2)A8(7)","status":"affected"},{"version":"6.0(2)A8(7a)","status":"affected"},{"version":"6.0(2)A8(7b)","status":"affected"},{"version":"6.0(2)A8(8)","status":"affected"},{"version":"6.0(2)A8(9)","status":"affected"},{"version":"6.0(2)A8(10a)","status":"affected"},{"version":"6.0(2)A8(10)","status":"affected"},{"version":"6.0(2)A8(11)","status":"affected"},{"version":"6.0(2)A8(11a)","status":"affected"},{"version":"6.0(2)A8(11b)","status":"affected"},{"version":"6.0(2)U2(1)","status":"affected"},{"version":"6.0(2)U2(2)","status":"affected"},{"version":"6.0(2)U2(3)","status":"affected"},{"version":"6.0(2)U2(4)","status":"affected"},{"version":"6.0(2)U2(5)","status":"affected"},{"version":"6.0(2)U2(6)","status":"affected"},{"version":"6.0(2)U3(1)","status":"affected"},{"version":"6.0(2)U3(2)","status":"affected"},{"version":"6.0(2)U3(3)","status":"affected"},{"version":"6.0(2)U3(4)","status":"affected"},{"version":"6.0(2)U3(5)","status":"affected"},{"version":"6.0(2)U3(6)","status":"affected"},{"version":"6.0(2)U3(7)","status":"affected"},{"version":"6.0(2)U3(8)","status":"affected"},{"version":"6.0(2)U3(9)","status":"affected"},{"version":"6.0(2)U4(1)","status":"affected"},{"version":"6.0(2)U4(2)","status":"affected"},{"version":"6.0(2)U4(3)","status":"affected"},{"version":"6.0(2)U4(4)","status":"affected"},{"version":"6.0(2)U5(1)","status":"affected"},{"version":"6.0(2)U5(2)","status":"affected"},{"version":"6.0(2)U5(3)","status":"affected"},{"version":"6.0(2)U5(4)","status":"affected"},{"version":"6.0(2)U6(1)","status":"affected"},{"version":"6.0(2)U6(2)","status":"affected"},{"version":"6.0(2)U6(3)","status":"affected"},{"version":"6.0(2)U6(4)","status":"affected"},{"version":"6.0(2)U6(5)","status":"affected"},{"version":"6.0(2)U6(6)","status":"affected"},{"version":"6.0(2)U6(7)","status":"affected"},{"version":"6.0(2)U6(8)","status":"affected"},{"version":"6.0(2)U6(1a)","status":"affected"},{"version":"6.0(2)U6(2a)","status":"affected"},{"version":"6.0(2)U6(3a)","status":"affected"},{"version":"6.0(2)U6(4a)","status":"affected"},{"version":"6.0(2)U6(5a)","status":"affected"},{"version":"6.0(2)U6(5b)","status":"affected"},{"version":"6.0(2)U6(5c)","status":"affected"},{"version":"6.0(2)U6(9)","status":"affected"},{"version":"6.0(2)U6(10)","status":"affected"},{"version":"6.2(2)","status":"affected"},{"version":"6.2(2a)","status":"affected"},{"version":"6.2(6)","status":"affected"},{"version":"6.2(6b)","status":"affected"},{"version":"6.2(8)","status":"affected"},{"version":"6.2(8a)","status":"affected"},{"version":"6.2(8b)","status":"affected"},{"version":"6.2(10)","status":"affected"},{"version":"6.2(12)","status":"affected"},{"version":"6.2(18)","status":"affected"},{"version":"6.2(16)","status":"affected"},{"version":"6.2(14)","status":"affected"},{"version":"6.2(6a)","status":"affected"},{"version":"6.2(20)","status":"affected"},{"version":"6.2(20a)","status":"affected"},{"version":"6.2(22)","status":"affected"},{"version":"6.2(24)","status":"affected"},{"version":"6.2(24a)","status":"affected"},{"version":"7.0(3)F1(1)","status":"affected"},{"version":"7.0(3)F2(1)","status":"affected"},{"version":"7.0(3)F2(2)","status":"affected"},{"version":"7.0(3)F3(1)","status":"affected"},{"version":"7.0(3)F3(2)","status":"affected"},{"version":"7.0(3)F3(3)","status":"affected"},{"version":"7.0(3)F3(3a)","status":"affected"},{"version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