CVE-2019-1736
| Summary |
A vulnerability in the firmware of the Cisco UCS C-Series Rack Servers could allow an authenticated, physical attacker to bypass Unified Extensible Firmware Interface (UEFI) Secure Boot validation checks and load a compromised software image on an affected device. The vulnerability is due to improper validation of the server firmware upgrade images. An attacker could exploit this vulnerability by installing a server firmware version that would allow the attacker to disable UEFI Secure Boot. A successful exploit could allow the attacker to bypass the signature validation checks that are done by UEFI Secure Boot technology and load a compromised software image on the affected device. A compromised software image is any software image that has not been digitally signed by Cisco.
|
| Publication Date |
Sept. 23, 2020, 10:15 a.m. |
| Registration Date |
Jan. 26, 2021, 11:40 a.m. |
| Last Update |
Nov. 21, 2024, 1:37 p.m. |
|
CVSS3.1 : MEDIUM
|
| スコア |
6.6
|
| Vector |
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| 攻撃元区分(AV) |
物理 |
| 攻撃条件の複雑さ(AC) |
低 |
| 攻撃に必要な特権レベル(PR) |
低 |
| 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 : MEDIUM
|
| Score |
6.9
|
| Vector |
AV:L/AC:M/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) |
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 |
| Configuration2 |
or higher |
or less |
more than |
less than |
| Configuration3 |
or higher |
or less |
more than |
less than |
| Configuration4 |
or higher |
or less |
more than |
less than |
| Configuration5 |
or higher |
or less |
more than |
less than |
| Configuration6 |
or higher |
or less |
more than |
less than |
| Configuration7 |
or higher |
or less |
more than |
less than |
| Configuration8 |
or higher |
or less |
more than |
less than |
| Configuration9 |
or higher |
or less |
more than |
less than |
| Configuration10 |
or higher |
or less |
more than |
less than |
| Configuration11 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:cisco:identity_services_engine:2.4\(0.357\):*:*:*:*:*:*:* |
|
|
|
|
| cpe:2.3:a:cisco:identity_services_engine:2.6\(0.156\):*:*:*:*:*:*:* |
|
|
|
|
| cpe:2.3:a:cisco:unified_computing_system:3.2\(3h\)c:*:*:*:*:*:*:* |
|
|
|
|
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Cisco UCS C シリーズラックサーバにおけるデジタル署名の検証に関する脆弱性
| Title |
Cisco UCS C シリーズラックサーバにおけるデジタル署名の検証に関する脆弱性
|
| Summary |
Cisco UCS C シリーズラックサーバには、デジタル署名の検証に関する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 |
Feb. 19, 2020, midnight |
| Registration Date |
May 11, 2021, 5:19 p.m. |
| Last Update |
May 11, 2021, 5:19 p.m. |
Affected System
| シスコシステムズ |
|
FMC1000 K9 BIOS
|
|
FMC1000 K9 ファームウェア
|
|
FMC2500 K9 BIOS
|
|
FMC2500 K9 ファームウェア
|
|
FMC4500 K9 BIOS
|
|
FMC4500 K9 ファームウェア
|
|
SNS 3515 K9 BIOS
|
|
SNS 3515 K9 ファームウェア
|
|
SNS 3595 K9 BIOS
|
|
SNS 3595 K9 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 |
[2021年05月11日]
掲載 |
May 11, 2021, 5:19 p.m. |