NVD Vulnerability Detail
Search Exploit, PoC
CVE-2021-28511
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.

Publication Date Aug. 6, 2022, 2:15 a.m.
Registration Date Aug. 6, 2022, 10 a.m.
Last Update Nov. 21, 2024, 2:59 p.m.
CVSS3.1 : MEDIUM
スコア 6.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC) 低
攻撃に必要な特権レベル(PR) 不要
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C) 低
完全性への影響(I) 低
可用性への影響(A) なし
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.24.9
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.25.0 4.25.8
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.26.0 4.26.5
cpe:2.3:o:arista:eos:*:*:*:*:*:*:*:* 4.27.0 4.27.3
execution environment
1 cpe:2.3:h:arista:7050cx3-32s:-:*:*:*:*:*:*:*
2 cpe:2.3:h:arista:7050cx3m-32s:-:*:*:*:*:*:*:*
3 cpe:2.3:h:arista:7050sx3-48c8:-:*:*:*:*:*:*:*
4 cpe:2.3:h:arista:7050sx3-48yc:-:*:*:*:*:*:*:*
5 cpe:2.3:h:arista:7050sx3-48yc12:-:*:*:*:*:*:*:*
6 cpe:2.3:h:arista:7050sx3-48yc8:-:*:*:*:*:*:*:*
7 cpe:2.3:h:arista:7050sx3-96yc8:-:*:*:*:*:*:*:*
8 cpe:2.3:h:arista:7050tx3-48c8:-:*:*:*:*:*:*:*
9 cpe:2.3:h:arista:720xp-24y6:-:*:*:*:*:*:*:*
10 cpe:2.3:h:arista:720xp-24zy4:-:*:*:*:*:*:*:*
11 cpe:2.3:h:arista:720xp-48y6:-:*:*:*:*:*:*:*
12 cpe:2.3:h:arista:720xp-48zc2:-:*:*:*:*:*:*:*
13 cpe:2.3:h:arista:720xp-96zc2:-:*:*:*:*:*:*:*
14 cpe:2.3:h:arista:7300x3-32c:-:*:*:*:*:*:*:*
15 cpe:2.3:h:arista:7300x3-48yc4:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Arista Networks, Inc. の Arista EOS における脆弱性
Title Arista Networks, Inc. の Arista EOS における脆弱性
Summary

Arista Networks, Inc. の Arista EOS には、不特定の脆弱性が存在します。

Possible impacts 情報を取得される、および情報を改ざんされる可能性があります。
Solution

ベンダアドバイザリまたはパッチ情報が公開されています。参考情報を参照して適切な対策を実施してください。
Publication Date March 16, 2021, midnight
Registration Date Sept. 20, 2023, 5:33 p.m.
Last Update Sept. 20, 2023, 5:33 p.m.
Affected System
Arista Networks, Inc.
Arista EOS 4.24.9 およびそれ以前
Arista EOS 4.25.0 から 4.25.8
Arista EOS 4.26.0 から 4.26.5
Arista EOS 4.27.0 から 4.27.3
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
その他
Change Log
No Changed Details Date of change
1 [2023年09月20日]
  掲載		 Sept. 20, 2023, 5:33 p.m.