{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2024-5872","assignerOrgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","state":"PUBLISHED","assignerShortName":"Arista","dateReserved":"2024-06-11T15:41:47.035Z","datePublished":"2025-01-10T20:25:53.860Z","dateUpdated":"2025-01-10T21:11:37.497Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"EOS","vendor":"Arista Networks","versions":[{"lessThanOrEqual":"4.32.2F","status":"affected","version":"4.32.0F","versionType":"custom"},{"lessThanOrEqual":"4.31.4M","status":"affected","version":"4.31.0M","versionType":"custom"},{"lessThanOrEqual":"4.30.7M","status":"affected","version":"4.30.0M","versionType":"custom"},{"lessThanOrEqual":"4.29.8M","status":"affected","version":"4.29.0M","versionType":"custom"},{"lessThanOrEqual":"4.28.11F","status":"affected","version":"4.28.1F","versionType":"custom"}]}],"configurations":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

There are multiple conditions which must be met. An L3 interface must be configured on the device and at least one of four additional conditions, detailed below and labeled 1 through 4, must be met. In addition to the configuration the packet being sent must have an incorrect VLAN tag.

In order to be vulnerable to CVE-2024-5872, an L3 interface MUST be configured on the device.

To check IPv4 L3 interface configuration:

Switch>show ip interface brief\n                                                              Address\nInterface     IP Address         Status    Protocol     MTU   Owner\n------------- ------------------ --------- ---------- ------ -------\nEthernet5/1   5.1.1.1/24         up        up          1500\nManagement1   10.240.112.30/25   up        up          1500\nVlan4         4.1.1.1/24         up        up          1500\n
 

To check IPv6 L3 interface configuration:

Switch>show ipv6 interface brief\nInterface  Status  MTU IPv6 Address            Addr State Addr Source\n--------- ------- ---- ----------------------- ---------- -----------\nMa1        up     1500 fe80::d3ff:fe5f:73e9/64 up         link local\n                       fdfd:5c41:712d::701e/64 up         config\nVl4        up     1500 fe80::d3ff:fe5f:73ea/64 up         link local\n                       120::1/120              up         config\n
 
AND

At least one of the following conditions (#’s 1-4 below) must be met:

  1. Either IPv4 routing or IPv6 routing is not configured, which will cause the vulnerability to impact IPv4 unicast packets or IPv6 unicast packets, respectively:
    Switch>show ip\n \nIP Routing : Disabled\nIP Multicast Routing : Disabled\nIPv6 Multicast Routing : Disabled\nIPv6 Interfaces Forwarding : None\n \nIPv6 Unicast Routing : Disabled\n
OR
  1. For packets with TTL of 0 or 1, all IP configurations are vulnerable.
     
OR
  1. Unicast and multicast routing must be configured for IPv4 to be vulnerable for IPv4 multicast packets, and IPv4 multicast must be enabled on an L3 interface:
    Switch>show ip\n \nIP Routing : Enabled\nIP Multicast Routing : Enabled\nIPv6 Multicast Routing : Disabled\nIPv6 Interfaces Forwarding : None\n
    \nIPv6 Unicast Routing : Disabled\nSwitch(config-if-Vl4)#show active\ninterface Vlan4\n   ip address 4.1.1.1/24\n   pim ipv4 sparse-mode\n
OR
  1. Unicast and multicast routing must be configured for IPv6 to be vulnerable to IPv6 multicast packets, and IPv6 multicast must be enabled on an L3 interface:
    Switch>show ip\n  \nIP Routing : Disabled\nIP Multicast Routing : Disabled\nIPv6 Multicast Routing : Enabled\nIPv6 Interfaces Forwarding : None\n  \nIPv6 Unicast Routing : Enabled\nSwitch(config-if-Vl4)#show active\ninterface Vlan4\n   ipv6 address 120::1/120\n   pim ipv6 sparse-mode

"}],"value":"There are multiple conditions which must be met. An L3 interface must be configured on the device and at least one of four additional conditions, detailed below and labeled 1 through 4, must be met. In addition to the configuration the packet being sent must have an incorrect VLAN tag.\n\nIn order to be vulnerable to CVE-2024-5872, an L3 interface MUST be configured on the device.\n\nTo check IPv4 L3 interface configuration:\n\nSwitch>show ip interface brief\n                                                              Address\nInterface     IP Address         Status   Protocol     MTU   Owner\n------------- ------------------ --------- ---------- ------ -------\nEthernet5/1   5.1.1.1/24         up       up         1500\nManagement1   10.240.112.30/25   up       up         1500\nVlan4         4.1.1.1/24         up       up         1500\n\n\n \n\nTo check IPv6 L3 interface configuration:\n\nSwitch>show ipv6 interface brief\nInterface Status MTU IPv6 Address           Addr State Addr Source\n--------- ------- ---- ----------------------- ---------- -----------\nMa1       up     1500 fe80::d3ff:fe5f:73e9/64 up         link local\n                       fdfd:5c41:712d::701e/64 up         config\nVl4       up     1500 fe80::d3ff:fe5f:73ea/64 up         link local\n                       120::1/120             up         config\n\n\n \n\nAND\n\nAt least one of the following conditions (#’s 1-4 below) must be met:\n\n * Either IPv4 routing or IPv6 routing is not configured, which will cause the vulnerability to impact IPv4 unicast packets or IPv6 unicast packets, respectively:\nSwitch>show ip\n \nIP Routing : Disabled\nIP Multicast Routing : Disabled\nIPv6 Multicast Routing : Disabled\nIPv6 Interfaces Forwarding : None\n \nIPv6 Unicast Routing : Disabled\n\n\n\nOR\n\n * For packets with TTL of 0 or 1, all IP configurations are vulnerable.\n \n\n\nOR\n\n * Unicast and multicast routing must be configured for IPv4 to be vulnerable for IPv4 multicast packets, and IPv4 multicast must be enabled on an L3 interface:\nSwitch>show ip\n \nIP Routing : Enabled\nIP Multicast Routing : Enabled\nIPv6 Multicast Routing : Disabled\nIPv6 Interfaces Forwarding : None\n\n\nIPv6 Unicast Routing : Disabled\nSwitch(config-if-Vl4)#show active\ninterface Vlan4\n   ip address 4.1.1.1/24\n   pim ipv4 sparse-mode\n\n\n\nOR\n\n * Unicast and multicast routing must be configured for IPv6 to be vulnerable to IPv6 multicast packets, and IPv6 multicast must be enabled on an L3 interface:\nSwitch>show ip\n \nIP Routing : Disabled\nIP Multicast Routing : Disabled\nIPv6 Multicast Routing : Enabled\nIPv6 Interfaces Forwarding : None\n \nIPv6 Unicast Routing : Enabled\nSwitch(config-if-Vl4)#show active\ninterface Vlan4\n   ipv6 address 120::1/120\n   pim ipv6 sparse-mode"}],"datePublic":"2024-11-19T20:20:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"On affected platforms running Arista EOS, a specially crafted packet with incorrect VLAN tag might be copied to CPU, which may cause incorrect control plane behavior related to the packet, such as route flaps, multicast routes learnt, etc."}],"value":"On affected platforms running Arista EOS, a specially crafted packet with incorrect VLAN tag might be copied to CPU, which may cause incorrect control plane behavior related to the packet, such as route flaps, multicast routes learnt, etc."}],"impacts":[{"capecId":"CAPEC-141","descriptions":[{"lang":"en","value":"CAPEC-141"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"LOW","baseScore":6.5,"baseSeverity":"MEDIUM","confidentialityImpact":"NONE","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"description":"cwe-346","lang":"en"}]}],"providerMetadata":{"orgId":"c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7","shortName":"Arista","dateUpdated":"2025-01-10T20:25:53.860Z"},"references":[{"url":"https://www.arista.com/en/support/advisories-notices/security-advisory/20649-security-advisory-0106"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"

The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below. For more information about upgrading see EOS User Manual: Upgrades and Downgrades

 
CVE-2024-5872 has been fixed in the following releases:

"}],"value":"The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Arista recommends customers move to the latest version of each release that contains all the fixes listed below. For more information about upgrading see EOS User Manual: Upgrades and Downgrades https://www.arista.com/en/um-eos/eos-upgrades-and-downgrades \n\n \n\nCVE-2024-5872 has been fixed in the following releases:\n\n * 4.33.0F and later releases in the 4.33.x train\n * 4.32.3M and later releases in the 4.32.x train\n * 4.31.5M and later releases in the 4.31.x train\n * 4.30.8M and later releases in the 4.30.x train\n * 4.29.9M and later releases in the 4.29.x train\n * 4.28.12M and later releases in the 4.28.x train"}],"source":{"advisory":"106","defect":["BUG 884202"],"discovery":"INTERNAL"},"title":"On affected platforms running Arista EOS, a specially crafted packet with incorrect VLAN tag might be copied to CPU, which may cause incorrect control plane behavior related to the packet, such as route flaps, multicast routes learnt, etc.","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"There is no workaround.
"}],"value":"There is no workaround."}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-01-10T21:11:13.257737Z","id":"CVE-2024-5872","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-01-10T21:11:37.497Z"}}]}}