NVD Vulnerability Detail
Search Exploit, PoC
CVE-2020-35508
Summary

A flaw possibility of race condition and incorrect initialization of the process id was found in the Linux kernel child/parent process identification handling while filtering signal handlers. A local attacker is able to abuse this flaw to bypass checks to send any signal to a privileged process.

Publication Date March 27, 2021, 2:15 a.m.
Registration Date March 27, 2021, 12:01 p.m.
Last Update Nov. 21, 2024, 2:27 p.m.
CVSS3.1 : MEDIUM
スコア 4.5
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
攻撃元区分(AV) ローカル
攻撃条件の複雑さ(AC) 高
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) 低
完全性への影響(I) 低
可用性への影響(A) 低
CVSS2.0 : MEDIUM
Score 4.4
Vector AV:L/AC:M/Au:N/C:P/I:P/A:P
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) 低
完全性への影響(I) 低
可用性への影響(A) 低
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:linux:linux_kernel:5.12:rc1:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.12:rc2:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.12:rc3:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.12:rc4:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:5.12:-:*:*:*:*:*:*
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* 5.12
Configuration2 or higher or less more than less than
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:netapp:a700s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:a700s:-:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:netapp:brocade_fabric_operating_system_firmware:-:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:o:netapp:fas8300_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:fas8300:-:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:netapp:fas8700_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:fas8700:-:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:o:netapp:aff_a400_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:aff_a400:-:*:*:*:*:*:*:*
Configuration8 or higher or less more than less than
cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
Configuration9 or higher or less more than less than
cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
Configuration10 or higher or less more than less than
cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
Configuration11 or higher or less more than less than
cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
Configuration12 or higher or less more than less than
cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
Configuration13 or higher or less more than less than
cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
Configuration14 or higher or less more than less than
cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
Configuration15 or higher or less more than less than
cpe:2.3:o:netapp:h410c_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h410c:-:*:*:*:*:*:*:*
Configuration16 or higher or less more than less than
cpe:2.3:o:netapp:h610c_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h610c:-:*:*:*:*:*:*:*
Configuration17 or higher or less more than less than
cpe:2.3:o:netapp:h610s_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h610s:-:*:*:*:*:*:*:*
Configuration18 or higher or less more than less than
cpe:2.3:o:netapp:h615c_firmware:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:h:netapp:h615c:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
Linux Kernel における初期化に関する脆弱性
Title Linux Kernel における初期化に関する脆弱性
Summary

Linux Kernel には、初期化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 Nov. 9, 2020, midnight
Registration Date Dec. 2, 2021, 6:13 p.m.
Last Update Dec. 2, 2021, 6:13 p.m.
Affected System
レッドハット
Red Hat Enterprise Linux 
Linux
Linux Kernel 
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12月02日]
  掲載		 Dec. 2, 2021, 6:13 p.m.