CVE-2023-38492

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Source
https://nvd.nist.gov/vuln/detail/CVE-2023-38492
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-38492.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-38492
Aliases
Published
2023-07-27T16:15:11Z
Modified
2024-05-30T04:08:11.944677Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

Kirby is a content management system. A vulnerability in versions prior to 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and 3.9.6 affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). The real-world impact of this vulnerability is limited, however we still recommend to update to one of the patch releases because they also fix more severe vulnerabilities.

Kirby's authentication endpoint did not limit the password length. This allowed attackers to provide a password with a length up to the server's maximum request body length. Validating that password against the user's actual password requires hashing the provided password, which requires more CPU and memory resources (and therefore processing time) the longer the provided password gets. This could be abused by an attacker to cause the website to become unresponsive or unavailable. Because Kirby comes with a built-in brute force protection, the impact of this vulnerability is limited to 10 failed logins from each IP address and 10 failed logins for each existing user per hour.

The problem has been patched in Kirby 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and 3.9.6. In all of the mentioned releases, the maintainers have added password length limits in the affected code so that passwords longer than 1000 bytes are immediately blocked, both when setting a password and when logging in.

References

Affected packages

Git / github.com/getkirby/kirby

Affected ranges

Type
GIT
Repo
https://github.com/getkirby/kirby
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0e10ce3b0c2b88656564b8ff518ddc99136ac43e

Affected versions

3.*

3.0.0
3.0.1
3.0.2
3.0.2-rc.1
3.0.3
3.0.3-rc.1
3.0.3-rc.2
3.0.3-rc.3
3.1.0
3.1.0-rc.1
3.1.1
3.1.2
3.1.2-rc.1
3.1.3
3.1.3-rc.1
3.1.4
3.1.4-rc.1
3.2.0
3.2.0-rc.1
3.2.0-rc.2
3.2.0-rc.3
3.2.0-rc.4
3.2.1
3.2.1-rc.1
3.2.2
3.2.3
3.2.3-rc.1
3.2.4
3.2.4-rc.1
3.2.5
3.2.5-rc.1
3.2.5-rc.2
3.3.0
3.3.0-rc.1
3.3.0-rc.2
3.3.0-rc.3
3.3.0-rc.4
3.3.0-rc.5
3.3.1
3.3.1-rc.1
3.3.2
3.3.2-rc.1
3.3.3
3.3.3-rc.1
3.3.4
3.3.4-rc.1
3.3.5
3.3.5-rc.1
3.3.6
3.4.0
3.4.0-rc.1
3.4.0-rc.2
3.4.0-rc.3
3.4.1
3.4.2
3.4.3
3.4.4
3.4.4-rc.1
3.4.5
3.5.0
3.5.0-rc.1
3.5.0-rc.2
3.5.0-rc.3
3.5.0-rc.4
3.5.0-rc.5
3.5.0-rc.6
3.5.0-rc.7
3.5.1
3.5.1-rc.1
3.5.2
3.5.2-rc.1
3.5.3
3.5.3.1
3.5.4
3.5.5
3.5.5-rc.1
3.5.6
3.5.6-rc.1
3.5.7
3.5.7-rc.1
3.5.7.1
3.6.0
3.6.0-alpha.1
3.6.0-alpha.2
3.6.0-alpha.3
3.6.0-alpha.4
3.6.0-beta.1
3.6.0-beta.2
3.6.0-beta.3
3.6.0-rc.1
3.6.0-rc.2
3.6.0-rc.3
3.6.0-rc.4
3.6.0-rc.5
3.6.1
3.6.1.1
3.6.2
3.6.2-rc.1
3.6.2-rc.2
3.6.2-rc.3
3.6.3
3.6.3-rc.1
3.6.3-rc.2
3.6.3.1
3.6.4
3.6.4-rc.1
3.6.5
3.6.5-rc.1
3.6.6
3.6.6-rc.1
3.7.0
3.7.0-rc.1
3.7.0-rc.2
3.7.0-rc.3
3.7.0.1
3.7.0.2
3.7.1
3.7.1-rc.1
3.7.2
3.7.2-rc.1
3.7.2.1
3.7.3
3.7.3-rc.1
3.7.4
3.7.4-rc.1
3.7.5
3.8.0
3.8.0-rc.1
3.8.0-rc.2
3.8.0-rc.3
3.8.1
3.8.1-rc.1
3.8.1.1
3.8.2
3.8.2-rc.1
3.8.3
3.8.3-rc.1
3.8.3-rc.2
3.8.4
3.9.0
3.9.0-rc.1
3.9.0-rc.2
3.9.1
3.9.1-rc.1
3.9.2
3.9.2-rc.1
3.9.3
3.9.3-rc.1
3.9.4
3.9.4-rc.1
3.9.5
3.9.5-rc.1
3.9.6-rc.1