CVE-2023-27580

CodeIgniter Shield Password Shucking Vulnerability

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.10%
Vendor Advisory github.com Vendor Advisory github.com
Affected: codeigniter4 shield
Published at:
Updated at:

References

Link Tags
https://github.com/codeigniter4/shield/security/advisories/GHSA-c5vj-f36q-p9vg vendor advisory
https://github.com/codeigniter4/shield/commit/ea9688dd01d100193d834117dbfc2cfabcf9ea0b patch
https://blog.ircmaxell.com/2015/03/security-issue-combining-bcrypt-with.html third party advisory
https://cheatsheetseries.owasp.org/cheatsheets/Password_Storage_Cheat_Sheet.html#pre-hashing-passwords not applicable
https://github.com/codeigniter4/shield/blob/develop/UPGRADING.md vendor advisory
https://www.scottbrady91.com/authentication/beware-of-password-shucking third party advisory

Frequently Asked Questions

What is the severity of CVE-2023-27580?
CVE-2023-27580 has been scored as a high severity vulnerability.
How to fix CVE-2023-27580?
To fix CVE-2023-27580, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-27580 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-27580 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-27580?
CVE-2023-27580 affects codeigniter4 shield.
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