NVD Vulnerability Detail
Search Exploit, PoC
CVE-2021-34779
Summary

Multiple vulnerabilities exist in the Link Layer Discovery Protocol (LLDP) implementation for Cisco Small Business 220 Series Smart Switches. An unauthenticated, adjacent attacker could perform the following: Execute code on the affected device or cause it to reload unexpectedly Cause LLDP database corruption on the affected device For more information about these vulnerabilities, see the Details section of this advisory. Note: LLDP is a Layer 2 protocol. To exploit these vulnerabilities, an attacker must be in the same broadcast domain as the affected device (Layer 2 adjacent). Cisco has released firmware updates that address these vulnerabilities.

Publication Date Oct. 7, 2021, 5:15 a.m.
Registration Date Oct. 7, 2021, 10 a.m.
Last Update Nov. 21, 2024, 3:11 p.m.
CVSS3.1 : HIGH
スコア 8.8
Vector CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV) 隣接
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) 高
完全性への影響(I) 高
可用性への影響(A) 高
CVSS2.0 : HIGH
Score 7.9
Vector AV:A/AC:M/Au:N/C:C/I:C/A:C
攻撃元区分(AV) 隣接
攻撃条件の複雑さ(AC) 中
攻撃前の認証要否(Au) 不要
機密性への影響(C) 高
完全性への影響(I) 高
可用性への影響(A) 高
Get all privileges. いいえ
Get user privileges いいえ
Get other privileges いいえ
User operation required いいえ
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:o:cisco:business_220-8t-e-2g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-8t-e-2g:-:*:*:*:*:*:*:*
Configuration2 or higher or less more than less than
cpe:2.3:o:cisco:business_220-8p-e-2g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-8p-e-2g:-:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:cisco:business_220-8fp-e-2g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-8fp-e-2g:-:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:cisco:business_220-16t-2g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-16t-2g:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:cisco:business_220-16p-2g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-16p-2g:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:cisco:business_220-24t-4g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-24t-4g:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:cisco:business_220-24p-4g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-24p-4g:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:cisco:business_220-24fp-4g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-24fp-4g:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:cisco:business_220-48t-4g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-48t-4g:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:cisco:business_220-48p-4g_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-48p-4g:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:cisco:business_220-24t-4x_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-24t-4x:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:cisco:business_220-24p-4x_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-24p-4x:-:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:cisco:business_220-24fp-4x_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-24fp-4x:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:cisco:business_220-48t-4x_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-48t-4x:-:*:*:*:*:*:*:*
Configuration15 or higher or less more than less than
cpe:2.3:o:cisco:business_220-48p-4x_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-48p-4x:-:*:*:*:*:*:*:*
Configuration16 or higher or less more than less than
cpe:2.3:o:cisco:business_220-48fp-4x_firmware:*:*:*:*:*:*:*:* 1.2.0.6
execution environment
1 cpe:2.3:h:cisco:business_220-48fp-4x:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Cisco Small Business 220 シリーズ Smart Switche における古典的バッファオーバーフローの脆弱性
Title Cisco Small Business 220 シリーズ Smart Switche における古典的バッファオーバーフローの脆弱性
Summary

Cisco Small Business 220 シリーズ Smart Switche には、古典的バッファオーバーフローの脆弱性が存在します。

Possible impacts 情報を取得される、情報を改ざんされる、およびサービス運用妨害 (DoS) 状態にされる可能性があります。
Solution

ベンダより正式な対策が公開されています。ベンダ情報を参照して適切な対策を実施してください。
Publication Date Oct. 6, 2021, midnight
Registration Date Sept. 8, 2022, 3:04 p.m.
Last Update Sept. 8, 2022, 3:04 p.m.
Affected System
シスコシステムズ
Business 220-16p-2g ファームウェア 
Business 220-16t-2g ファームウェア 
Business 220-24fp-4g ファームウェア 
Business 220-24p-4g ファームウェア 
Business 220-24t-4g ファームウェア 
Business 220-48p-4g ファームウェア 
Business 220-48t-4g ファームウェア 
Business 220-8fp-e-2g ファームウェア 
Business 220-8p-e-2g ファームウェア 
Business 220-8t-e-2g ファームウェア 
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)
ベンダー情報
Change Log
No Changed Details Date of change
1 [2022年09月08日]
  掲載		 Sept. 8, 2022, 3:04 p.m.