github - ghsa-7rjh-m68p-34pq

ghsa-7rjh-m68p-34pq

Vulnerability from github

Published

2022-08-06 00:00

Modified

2022-08-16 00:00

Severity ?

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Details

This advisory documents the impact of an internally found vulnerability in Arista EOS for security ACL bypass. The impact of this vulnerability is that the security ACL drop rule might be bypassed if a NAT ACL rule filter with permit action matches the packet flow. This could allow a host with an IP address in a range that matches the range allowed by a NAT ACL and a range denied by a Security ACL to be forwarded incorrectly as it should have been denied by the Security ACL. This can enable an ACL bypass.

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{
  "affected": [],
  "aliases": [
    "CVE-2021-28511"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-08-05T17:15:00Z",
    "severity": "MODERATE"
  },
  "details": "This advisory documents the impact of an internally found vulnerability in Arista EOS for security ACL bypass. The impact of this vulnerability is that the security ACL drop rule might be bypassed if a NAT ACL rule filter with permit action matches the packet flow. This could allow a host with an IP address in a range that matches the range allowed by a NAT ACL and a range denied by a Security ACL to be forwarded incorrectly as it should have been denied by the Security ACL. This can enable an ACL bypass.",
  "id": "GHSA-7rjh-m68p-34pq",
  "modified": "2022-08-16T00:00:23Z",
  "published": "2022-08-06T00:00:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28511"
    },
    {
      "type": "WEB",
      "url": "https://www.arista.com/en/support/advisories-notices/security-advisory/15862-security-advisory-0078"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-28511 (GCVE-0-2021-28511)

Vulnerability from cvelistv5

Published

2022-08-05 16:47

Modified

2024-09-16 17:15

Severity ?

5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

CWE

CWE-284 - Improper Access Control

Summary

This advisory documents the impact of an internally found vulnerability in Arista EOS for security ACL bypass. The impact of this vulnerability is that the security ACL drop rule might be bypassed if a NAT ACL rule filter with permit action matches the packet flow. This could allow a host with an IP address in a range that matches the range allowed by a NAT ACL and a range denied by a Security ACL to be forwarded incorrectly as it should have been denied by the Security ACL. This can enable an ACL bypass.

References

►

URL

Tags

https://www.arista.com/en/support/advisories-notices/security-advisory/15862-security-advisory-0078

x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Arista Networks	EOS	Version: 4.24.0 < Version: 4.25.0 < Version: 4.26.0 < Version: 4.27.0 <

Show details on NVD website

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