CVE-2023-27580

描述

### Impact An improper implementation was found in the password storage process. All hashed passwords stored in Shield v1.0.0-beta.3 or earlier are easier to crack than expected due to the vulnerability. Therefore, they should be removed as soon as possible. If an attacker gets (1) the user's hashed password by Shield, and (2) the hashed password (SHA-384 hash without salt) from somewhere, the attacker may easily crack the user's password. ### Patches Upgrade to Shield v1.0.0-beta.4 or later. After upgrading, all users’ hashed passwords should be updated (saved to the database). See https://github.com/codeigniter4/shield/blob/develop/UPGRADING.md for details. ### Workarounds None. ### References - https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pre-hashing-passwords - https://blog.ircmaxell.com/2015/03/security-issue-combining-bcrypt-with.html - https://www.scottbrady91.com/authentication/beware-of-password-shucking ### For more information If you have any questions or comments about this advisory: * Open an issue or discussion in [codeigniter4/shield](https://github.com/codeigniter4/shield) * Email us at [security@codeigniter.com](mailto:security@codeigniter.com)

如何修補 CVE-2023-27580

要修補 CVE-2023-27580,請將受影響套件升級到下列已修補版本。

• —升級至 1.0.0-beta.4 或更新版本

CVE-2023-27580 正在被利用嗎?

低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。

受影響套件(1)

• from 0, < 1.0.0-beta.4

CVSS 分數