GSD-2021-28503
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
The impact of this vulnerability is that Arista's EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-28503",
"description": "The impact of this vulnerability is that Arista\u0027s EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI.",
"id": "GSD-2021-28503"
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-28503"
],
"details": "The impact of this vulnerability is that Arista\u0027s EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI.",
"id": "GSD-2021-28503",
"modified": "2023-12-13T01:23:29.537841Z",
"schema_version": "1.4.0"
}
},
"namespaces": {
"cve.org": {
"CVE_data_meta": {
"ASSIGNER": "psirt@arista.com",
"DATE_PUBLIC": "2022-02-02T17:00:00.000Z",
"ID": "CVE-2021-28503",
"STATE": "PUBLIC",
"TITLE": "In Arista\u0027s EOS software affected releases, eAPI might skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI."
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "Arista EOS",
"version": {
"version_data": [
{
"version_affected": "\u003c",
"version_name": "EOS-4.23",
"version_value": "EOS-4.23.10"
},
{
"version_affected": "\u003c",
"version_name": "EOS-4.24",
"version_value": "EOS-4.24.8"
},
{
"version_affected": "\u003c",
"version_name": "EOS-4.25",
"version_value": "EOS-4.25.6"
},
{
"version_affected": "\u003c",
"version_name": "EOS-4.26",
"version_value": "EOS-4.26.3"
}
]
}
}
]
},
"vendor_name": "Arista Networks"
}
]
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"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "The impact of this vulnerability is that Arista\u0027s EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI."
}
]
},
"generator": {
"engine": "Vulnogram 0.0.9"
},
"impact": {
"cvss": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.4,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H",
"version": "3.1"
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "CWE-305 Authentication Bypass by Primary Weakness"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072",
"refsource": "MISC",
"url": "https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072"
}
]
},
"solution": [
{
"lang": "eng",
"value": "The recommended resolution is to upgrade to a remediated software version at your earliest convenience.\n\nThe vulnerability is fixed in the following EOS versions:\n 4.26.3 and later releases in the 4.26.x train\n 4.25.6 and later releases in the 4.25.x train\n 4.24.8 and later releases in the 4.24.x train\n 4.23.10 and later releases in the 4.24.x train"
}
],
"source": {
"advisory": "Security Advisory 0072",
"defect": [
"BUG606686"
],
"discovery": "INTERNAL"
},
"work_around": [
{
"lang": "eng",
"value": "Disallowing user certificate authentication via eAPI can be used to mitigate the vulnerability.\n\nswitch(config)#management security\nswitch(config-mgmt-security)#ssl profile profileEAPI\nswitch(config-mgmt-sec-ssl-profile-profileEAPI)#no trust certificate user.cert\nswitch(config-mgmt-sec-ssl-profile-profileEAPI)#exit"
}
]
},
"nvd.nist.gov": {
"configurations": {
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"nodes": [
{
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"cpe_match": [
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"cpe23Uri": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "4.24.7",
"versionStartIncluding": "4.24",
"vulnerable": true
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"cpe23Uri": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "4.23.9",
"versionStartIncluding": "4.23",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "4.26.2",
"versionStartIncluding": "4.26",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "4.25.5",
"versionStartIncluding": "4.25",
"vulnerable": true
},
{
"cpe23Uri": "cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "4.22.9m",
"versionStartIncluding": "4.22",
"vulnerable": true
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"operator": "OR"
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"cve": {
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"ASSIGNER": "psirt@arista.com",
"ID": "CVE-2021-28503"
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"description": {
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"value": "The impact of this vulnerability is that Arista\u0027s EOS eAPI may skip re-evaluating user credentials when certificate based authentication is used, which allows remote attackers to access the device via eAPI."
}
]
},
"problemtype": {
"problemtype_data": [
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"value": "CWE-287"
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"references": {
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{
"name": "https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072",
"refsource": "MISC",
"tags": [
"Mitigation",
"Patch",
"Vendor Advisory"
],
"url": "https://www.arista.com/en/support/advisories-notices/security-advisories/13605-security-advisory-0072"
}
]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.8,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 9.8,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.9
}
},
"lastModifiedDate": "2022-08-02T15:57Z",
"publishedDate": "2022-02-04T23:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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