Password Shucking Vulnerability
Impact
An improper implementation was found in the password storage process.
Source excerpt · OSVAffected packages
Start with the recorded fix for your release branch. Check your installed version and test compatibility before upgrading. Fixing this advisory does not rule out other vulnerabilities in the release.
| Affected range | Recorded fix |
|---|---|
| Earlier releases before 1.0.0-beta.4Ecosystem versions | 1.0.0-beta.4 |
Version evidence: OSV · GHSA-c5vj-f36q-p9vg
View original version evidence (3 explicit versions)
Original source description
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
- Email us at security@codeigniter.com
References
- Security advisory github.com/codeigniter4/shield/security/advisories/GHSA-c5vj-f36q-p9vg
- Security advisory nvd.nist.gov/vuln/detail/CVE-2023-27580
- Patch github.com/codeigniter4/shield/commit/ea9688dd01d100193d834117dbfc2cfabcf9ea0b
- Security advisory blog.ircmaxell.com/2015/03/security-issue-combining-bcrypt-with.html
- Source reference cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html
- Source reference github.com/codeigniter4/shield
- Source reference github.com/codeigniter4/shield/blob/develop/UPGRADING.md
- Source reference www.scottbrady91.com/authentication/beware-of-password-shucking