要点
- CVE-2023-27580 は codeigniter4/shield, shield (codeigniter) に影響する深刻度「中」 (CVSS 5.9) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.52%（全脆弱性の 44.0% より高い）。
- 対処：1.0.0-beta.4 以降に更新してください。
概要
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
For more information
If you have any questions or comments about this advisory:
NVD の説明
CodeIgniter Shield provides authentication and authorization for the CodeIgniter 4 PHP framework. 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. Upgrade to Shield v1.0.0-beta.4 or later to fix this issue. After upgrading, all users’ hashed passwords should be updated (saved to the database). There are no known workarounds.
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