fkie_cve-2021-28511
Vulnerability from fkie_nvd
Published
2022-08-05 17:15
Modified
2024-11-21 05:59
Severity ?
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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 | |
|---|---|---|---|
| psirt@arista.com | https://www.arista.com/en/support/advisories-notices/security-advisory/15862-security-advisory-0078 | Exploit, Mitigation, Vendor Advisory | |
| af854a3a-2127-422b-91ae-364da2661108 | https://www.arista.com/en/support/advisories-notices/security-advisory/15862-security-advisory-0078 | Exploit, Mitigation, Vendor Advisory |
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * | |
| arista | eos | * | |
| arista | 7050cx3-32s | - | |
| arista | 7050cx3m-32s | - | |
| arista | 7050sx3-48c8 | - | |
| arista | 7050sx3-48yc | - | |
| arista | 7050sx3-48yc12 | - | |
| arista | 7050sx3-48yc8 | - | |
| arista | 7050sx3-96yc8 | - | |
| arista | 7050tx3-48c8 | - | |
| arista | 720xp-24y6 | - | |
| arista | 720xp-24zy4 | - | |
| arista | 720xp-48y6 | - | |
| arista | 720xp-48zc2 | - | |
| arista | 720xp-96zc2 | - | |
| arista | 7300x3-32c | - | |
| arista | 7300x3-48yc4 | - |
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"value": "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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"id": "CVE-2021-28511",
"lastModified": "2024-11-21T05:59:48.747",
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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