250 lines
11 KiB
JSON
250 lines
11 KiB
JSON
{
|
|
"dataType": "CVE_RECORD",
|
|
"dataVersion": "5.2",
|
|
"cveMetadata": {
|
|
"cveId": "CVE-2026-73436",
|
|
"assignerOrgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7",
|
|
"state": "PUBLISHED",
|
|
"assignerShortName": "Arista",
|
|
"dateReserved": "2026-08-12T16:39:35.976Z",
|
|
"datePublished": "2026-09-16T09:19:47.800Z",
|
|
"dateUpdated": "2026-09-16T13:50:22.868Z"
|
|
},
|
|
"containers": {
|
|
"cna": {
|
|
"providerMetadata": {
|
|
"orgId": "c8b34d1a-69ae-45c3-88fe-f3b3d44f39b7",
|
|
"shortName": "Arista",
|
|
"dateUpdated": "2026-09-16T10:13:39.211Z"
|
|
},
|
|
"title": "Security Advisory 0171",
|
|
"descriptions": [
|
|
{
|
|
"lang": "en",
|
|
"value": "On affected platforms running Arista EOS with OSPFv2 and OSPFv2 segment routing configured, a specially crafted OSPFv2 packet from an adjacent OSPF neighbor may cause OSPF to restart unexpectedly.",
|
|
"supportingMedia": [
|
|
{
|
|
"type": "text/html",
|
|
"base64": false,
|
|
"value": "<p>On affected platforms running Arista EOS with OSPFv2 and OSPFv2 segment routing configured, a specially crafted OSPFv2 packet from an adjacent OSPF neighbor may cause OSPF to restart unexpectedly.</p><p>These issues were discovered internally by Arista, and the company is not aware of any malicious uses of these issues in customer networks.</p>"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"affected": [
|
|
{
|
|
"vendor": "Arista Networks",
|
|
"product": "EOS",
|
|
"defaultStatus": "unaffected",
|
|
"versions": [
|
|
{
|
|
"version": "4.36.0F",
|
|
"lessThanOrEqual": "4.36.1F",
|
|
"status": "affected",
|
|
"versionType": "custom"
|
|
},
|
|
{
|
|
"version": "4.35.0F",
|
|
"lessThanOrEqual": "4.35.5M",
|
|
"status": "affected",
|
|
"versionType": "custom"
|
|
},
|
|
{
|
|
"version": "4.34.0F",
|
|
"lessThanOrEqual": "4.34.7.1M",
|
|
"status": "affected",
|
|
"versionType": "custom"
|
|
},
|
|
{
|
|
"version": "4.33.0F",
|
|
"lessThanOrEqual": "4.33.9M",
|
|
"status": "affected",
|
|
"versionType": "custom"
|
|
},
|
|
{
|
|
"version": "1.0.0",
|
|
"lessThan": "4.33.0F",
|
|
"status": "affected",
|
|
"versionType": "custom"
|
|
}
|
|
],
|
|
"platforms": [
|
|
"710 Series",
|
|
"720D Series",
|
|
"720XP/722XPM Series",
|
|
"750X Series",
|
|
"7010 Series",
|
|
"7010X Series",
|
|
"7020R/R4 Series",
|
|
"7130 Series running EOS",
|
|
"7150 Series",
|
|
"7160 Series",
|
|
"7170 Series",
|
|
"7050X/X2/X3/X4 Series",
|
|
"7060X/X2/X4/X5/X6 Series",
|
|
"7250X Series",
|
|
"7260X/X3 Series",
|
|
"7280R/R2/R3/R4 Series",
|
|
"7300X/X3 Series",
|
|
"7320X Series",
|
|
"7358X4 Series",
|
|
"7368X4 Series",
|
|
"7388X5 Series",
|
|
"7500R/R2/R3 Series",
|
|
"7800R3/R4 Series",
|
|
"7700R4 Series",
|
|
"AWE 5000 Series",
|
|
"AWE 7200R Series",
|
|
"CloudEOS",
|
|
"cEOS-lab",
|
|
"vEOS-lab",
|
|
"CloudVision eXchange, virtual or physical appliance"
|
|
]
|
|
}
|
|
],
|
|
"configurations": [
|
|
{
|
|
"lang": "en",
|
|
"value": "In order to be vulnerable to CVE-2026-73436, the following condition must be met:\n\nOSPFv2 segment routing must be configured. If the below command shows any OSPF instance, then the deployment is vulnerable.\n\n switch>show ip ospf segment-routing\n SPF Instance ID: 1\n ...\n\nIf OSPFv2 segment routing is not configured, then there is no exposure to this issue.",
|
|
"supportingMedia": [
|
|
{
|
|
"type": "text/html",
|
|
"base64": false,
|
|
"value": "<p>In order to be vulnerable to CVE-2026-73436, the following condition must be met:</p><p>OSPFv2 segment routing must be configured. If the below command shows any OSPF instance, then the deployment is vulnerable.</p><pre>switch>show ip ospf segment-routing\nSPF Instance ID: 1\n...</pre><p>If OSPFv2 segment routing is not configured, then there is no exposure to this issue.</p>"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"workarounds": [
|
|
{
|
|
"lang": "en",
|
|
"value": "No mitigation is available for CVE-2026-73436.",
|
|
"supportingMedia": [
|
|
{
|
|
"type": "text/html",
|
|
"base64": false,
|
|
"value": "<p>No mitigation is available for CVE-2026-73436.</p>"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"solutions": [
|
|
{
|
|
"lang": "en",
|
|
"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.\n\nCVE-2026-73436 has been fixed in the following releases:\n- 4.36.2F and later releases in the 4.36.x train\n- 4.35.6M and later releases in the 4.35.x train\n- 4.34.8M and later releases in the 4.34.x train\n- 4.33.10M and later releases in the 4.33.x train\n\nNo hotfix is available for CVE-2026-73436.",
|
|
"supportingMedia": [
|
|
{
|
|
"type": "text/html",
|
|
"base64": false,
|
|
"value": "<p>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.</p><p>CVE-2026-73436 has been fixed in the following releases:</p><ul><li>4.36.2F and later releases in the 4.36.x train</li><li>4.35.6M and later releases in the 4.35.x train</li><li>4.34.8M and later releases in the 4.34.x train</li><li>4.33.10M and later releases in the 4.33.x train</li></ul><p>No hotfix is available for CVE-2026-73436.</p>"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"metrics": [
|
|
{
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
],
|
|
"cvssV3_1": {
|
|
"version": "3.1",
|
|
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
|
|
"baseScore": 6.5,
|
|
"baseSeverity": "MEDIUM"
|
|
}
|
|
},
|
|
{
|
|
"format": "CVSS",
|
|
"scenarios": [
|
|
{
|
|
"lang": "en",
|
|
"value": "GENERAL"
|
|
}
|
|
],
|
|
"cvssV4_0": {
|
|
"version": "4.0",
|
|
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
|
|
"baseScore": 6,
|
|
"baseSeverity": "MEDIUM"
|
|
}
|
|
}
|
|
],
|
|
"problemTypes": [
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"type": "CWE",
|
|
"lang": "en",
|
|
"cweId": "CWE-1284",
|
|
"description": "CWE-1284 Improper Validation of Specified Quantity in Input"
|
|
}
|
|
]
|
|
},
|
|
{
|
|
"descriptions": [
|
|
{
|
|
"type": "CWE",
|
|
"lang": "en",
|
|
"cweId": "CWE-125",
|
|
"description": "CWE-125 Out-of-bounds Read"
|
|
}
|
|
]
|
|
}
|
|
],
|
|
"references": [
|
|
{
|
|
"url": "https://www.arista.com/en/support/advisories-notices/security-advisory/24727-security-advisory-0171",
|
|
"name": "Security Advisory 0171",
|
|
"tags": [
|
|
"vendor-advisory"
|
|
]
|
|
}
|
|
],
|
|
"source": {
|
|
"advisory": "Security Advisory 0171",
|
|
"defects": [
|
|
"BUG 1843812"
|
|
],
|
|
"discovery": "INTERNAL"
|
|
}
|
|
},
|
|
"adp": [
|
|
{
|
|
"metrics": [
|
|
{
|
|
"other": {
|
|
"type": "ssvc",
|
|
"content": {
|
|
"timestamp": "2026-09-16T13:50:10.659104Z",
|
|
"id": "CVE-2026-73436",
|
|
"options": [
|
|
{
|
|
"Exploitation": "none"
|
|
},
|
|
{
|
|
"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": "2026-09-16T13:50:22.868Z"
|
|
}
|
|
}
|
|
]
|
|
}
|
|
} |