NVD Vulnerability Detail
Search Exploit, PoC
CVE-2021-21557
Summary

Dell PowerEdge Server BIOS and select Dell Precision Rack BIOS contain an out-of-bounds array access vulnerability. A local malicious user with high privileges may potentially exploit this vulnerability, leading to a denial of service, arbitrary code execution, or information disclosure in System Management Mode.

Publication Date June 15, 2021, 4:15 a.m.
Registration Date June 15, 2021, 10 a.m.
Last Update Nov. 21, 2024, 2:48 p.m.
CVSS3.1 : MEDIUM
スコア 6.7
Vector CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
攻撃元区分(AV) ローカル
攻撃条件の複雑さ(AC) 低
攻撃に必要な特権レベル(PR) 高
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 7.2
Vector AV:L/AC:L/Au:N/C:C/I:C/A:C
攻撃元区分(AV) ローカル
攻撃条件の複雑さ(AC) 低
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:dell:poweredge_r640_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_r640:-:*:*:*:*:*:*:*
Configuration2 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r740_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_r740:-:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r740xd_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_r740xd:-:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r940_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_r940:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r540_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_r540:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r440_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_r440:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:dell:poweredge_t440_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_t440:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:dell:poweredge_xr2_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_xr2:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r740xd2_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_r740xd2:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r840_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_r840:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r940xa_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_r940xa:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:dell:poweredge_t640_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_t640:-:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:dell:poweredge_c6420_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_c6420:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:dell:poweredge_fc640_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_fc640:-:*:*:*:*:*:*:*
Configuration15 or higher or less more than less than
cpe:2.3:o:dell:poweredge_m640_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_m640:-:*:*:*:*:*:*:*
Configuration16 or higher or less more than less than
cpe:2.3:o:dell:poweredge_m640p_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_m640p:-:*:*:*:*:*:*:*
Configuration17 or higher or less more than less than
cpe:2.3:o:dell:poweredge_mx740c_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_mx740c:-:*:*:*:*:*:*:*
Configuration18 or higher or less more than less than
cpe:2.3:o:dell:poweredge_mx840c_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_mx840c:-:*:*:*:*:*:*:*
Configuration19 or higher or less more than less than
cpe:2.3:o:dell:poweredge_c4140_firmware:*:*:*:*:*:*:*:* 2.11.2
execution environment
1 cpe:2.3:h:dell:poweredge_c4140:-:*:*:*:*:*:*:*
Configuration20 or higher or less more than less than
cpe:2.3:o:dell:poweredge_t140_firmware:*:*:*:*:*:*:*:* 2.5.1
execution environment
1 cpe:2.3:h:dell:poweredge_t140:-:*:*:*:*:*:*:*
Configuration21 or higher or less more than less than
cpe:2.3:o:dell:poweredge_t340_firmware:*:*:*:*:*:*:*:* 2.5.1
execution environment
1 cpe:2.3:h:dell:poweredge_t340:-:*:*:*:*:*:*:*
Configuration22 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r240_firmware:*:*:*:*:*:*:*:* 2.5.1
execution environment
1 cpe:2.3:h:dell:poweredge_r240:-:*:*:*:*:*:*:*
Configuration23 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r340_firmware:*:*:*:*:*:*:*:* 2.5.1
execution environment
1 cpe:2.3:h:dell:poweredge_r340:-:*:*:*:*:*:*:*
Configuration24 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r6415_firmware:*:*:*:*:*:*:*:* 1.16.1
execution environment
1 cpe:2.3:h:dell:poweredge_r6415:-:*:*:*:*:*:*:*
Configuration25 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r7415_firmware:*:*:*:*:*:*:*:* 1.16.1
execution environment
1 cpe:2.3:h:dell:poweredge_r7415:-:*:*:*:*:*:*:*
Configuration26 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r7425_firmware:*:*:*:*:*:*:*:* 1.16.1
execution environment
1 cpe:2.3:h:dell:poweredge_r7425:-:*:*:*:*:*:*:*
Configuration27 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r6515_firmware:*:*:*:*:*:*:*:* 2.2.4
execution environment
1 cpe:2.3:h:dell:poweredge_r6515:-:*:*:*:*:*:*:*
Configuration28 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r7515_firmware:*:*:*:*:*:*:*:* 2.2.4
execution environment
1 cpe:2.3:h:dell:poweredge_r7515:-:*:*:*:*:*:*:*
Configuration29 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r6525_firmware:*:*:*:*:*:*:*:* 2.2.5
execution environment
1 cpe:2.3:h:dell:poweredge_r6525:-:*:*:*:*:*:*:*
Configuration30 or higher or less more than less than
cpe:2.3:o:dell:poweredge_r7525_firmware:*:*:*:*:*:*:*:* 2.2.5
execution environment
1 cpe:2.3:h:dell:poweredge_r7525:-:*:*:*:*:*:*:*
Configuration31 or higher or less more than less than
cpe:2.3:o:dell:poweredge_c6525_firmware:*:*:*:*:*:*:*:* 2.2.4
execution environment
1 cpe:2.3:h:dell:poweredge_c6525:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Dell PowerEdge Server BIOS および一部の Dell Precision Rack BIOS におけるバッファエラーの脆弱性
Title Dell PowerEdge Server BIOS および一部の Dell Precision Rack BIOS におけるバッファエラーの脆弱性
Summary

Dell PowerEdge Server BIOS および一部の Dell Precision Rack BIOS には、バッファエラ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 June 8, 2021, midnight
Registration Date March 11, 2022, 11:41 a.m.
Last Update March 11, 2022, 11:41 a.m.
Affected System
デル
Dell PowerEdge R440 ファームウェア 
Dell PowerEdge R540 ファームウェア 
Dell PowerEdge R640 ファームウェア 
Dell PowerEdge R740 ファームウェア 
Dell PowerEdge R740XD ファームウェア 
Dell PowerEdge R740XD2 ファームウェア 
Dell PowerEdge R840 ファームウェア 
Dell PowerEdge R940 ファームウェア 
Dell PowerEdge T440 ファームウェア 
Dell PowerEdge XR2 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03月11日]
  掲載		 March 11, 2022, 11:41 a.m.