GSD-2021-28504
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
On Arista Strata family products which have “TCAM profile” feature enabled when Port IPv4 access-list has a rule which matches on “vxlan” as protocol then that rule and subsequent rules ( rules declared after it in ACL ) do not match on IP protocol field as expected.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-28504",
"description": "On Arista Strata family products which have \u201cTCAM profile\u201d feature enabled when Port IPv4 access-list has a rule which matches on \u201cvxlan\u201d as protocol then that rule and subsequent rules ( rules declared after it in ACL ) do not match on IP protocol field as expected.",
"id": "GSD-2021-28504"
},
"gsd": {
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"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
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],
"details": "On Arista Strata family products which have \u201cTCAM profile\u201d feature enabled when Port IPv4 access-list has a rule which matches on \u201cvxlan\u201d as protocol then that rule and subsequent rules ( rules declared after it in ACL ) do not match on IP protocol field as expected.",
"id": "GSD-2021-28504",
"modified": "2023-12-13T01:23:29.037488Z",
"schema_version": "1.4.0"
}
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}
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"value": "The recommended resolution is to upgrade to a remediated software version at your earliest convenience. Artista recommends customers move to the latest version of each release that contains all the fixes listed below.\n\nCVE-2021-28504 has been fixed in the following releases:\n\n4.26.4F and later releases in the 4.26.x train\n4.27.1M and later releases in the 4.27.x train"
}
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"defect": [
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"lang": "eng",
"value": "Replace \"vxlan\" IP protocol match with match on IP protocol \"udp\" and Layer 4 destination port for VxLAN encapsulated packets i.e 4789. \nIf VXLAN L4 destination port number is not the default 4789 then use the configured L4 destination port number."
}
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"lastModifiedDate": "2022-04-12T13:25Z",
"publishedDate": "2022-04-01T23:15Z"
}
}
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
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- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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- Not confirmed: The user expressed doubt about the validity of the vulnerability.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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