CVE-2020-13882
| Summary |
CISOfy Lynis before 3.0.0 has Incorrect Access Control because of a TOCTOU race condition. The routine to check the log and report file permissions was not working as intended and could be bypassed locally. Because of the race, an unprivileged attacker can set up a log and report file, and control that up to the point where the specific routine is doing its check. After that, the file can be removed, recreated, and used for additional attacks.
|
| Publication Date |
June 19, 2020, 3:15 a.m. |
| Registration Date |
Jan. 26, 2021, 11:52 a.m. |
| Last Update |
Nov. 21, 2024, 2:02 p.m. |
|
CVSS3.1 : MEDIUM
|
| スコア |
4.2
|
| Vector |
CVSS:3.1/AV:L/AC:H/PR:L/UI:R/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) |
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 : LOW
|
| Score |
3.7
|
| Vector |
AV:L/AC:H/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) |
高 |
| 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 |
はい
|
Affected software configurations
| Configuration1 |
or higher |
or less |
more than |
less than |
| cpe:2.3:a:cisofy:lynis:*:*:*:*:*:*:*:* |
|
|
|
3.0.0 |
| Configuration2 |
or higher |
or less |
more than |
less than |
| cpe:2.3:o:fedoraproject:fedora:31:*:*:*:*:*:*:* |
|
|
|
|
| cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:* |
|
|
|
|
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
CISOfy Lynis におけるTime-of-check Time-of-use (TOCTOU) 競合状態の脆弱性
| Title |
CISOfy Lynis におけるTime-of-check Time-of-use (TOCTOU) 競合状態の脆弱性
|
| Summary |
CISOfy Lynis には、Time-of-check Time-of-use (TOCTOU) 競合状態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 18, 2020, midnight |
| Registration Date |
July 31, 2020, 6:12 p.m. |
| Last Update |
July 31, 2020, 6:12 p.m. |
Affected System
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)
Change Log
| No |
Changed Details |
Date of change |
| 1 |
[2020年07月31日]
掲載 |
July 31, 2020, 6:12 p.m. |