Bump getkirby/cms from 3.5.5 to 3.5.8.3

[dependabot]

Bumps getkirby/cms from 3.5.5 to 3.5.8.3.

Release notes

Sourced from getkirby/cms's releases.

3.5.8.3

🚨 Security release

This release fixes several vulnerabilities that were all responsibly reported to us in June 2023:

• Insufficient Session Expiration after a password change (high severity, CVSS score 7.3)
• Field injection in the KirbyData text storage handler (high severity, CVSS score 7.1)
• XML External Entity (XXE) vulnerability in the XML data handler (medium severity, CVSS score 6.8)
• Cross-site scripting (XSS) from MIME type auto-detection of uploaded files (medium severity, CVSS score 5.7)
• Denial of service from unlimited password lengths (medium severity, CVSS score 5.3)

Thanks to Shankar Acharya (@​5hank4r), Alexandre Zanni (@​noraj) at ACCEIS and Patrick Falb (@​dapatrese) at FORMER 03 for responsibly reporting the identified issues.

Updated default .htaccess

We have updated the .htaccess that ships with our kits to the new version 2023-07-22, which adds protection against browser MIME type detection from malicious file uploads for files that have already been copied to the media folder. We recommend to update your sites’ .htaccess or server configuration with the new changes if you might have potential attackers in your group of authenticated Panel users or if your sites allow file uploads by visitors and the file extensions of uploaded files are not limited to a fixed safe list.

You can find the changes to the .htaccess in this commit and read more about the added rules in the security guide.

Thanks to Shankar Acharya (@​5hank4r) for making us aware of this potential attack vector.

Frame-blocking in the Panel

The Panel now sends the Content-Security-Policy: frame-ancestors 'none' header to increase the protection against clickjacking attacks. The session cookie was already set to SameSite before, so this is an additional layer of protection.

Thanks to Shankar Acharya (@​5hank4r) for suggesting this security enhancement.

Security-related breaking changes

• All users are logged out from their sessions after updating to this patch release.
• The Xml data handler (e.g. Data::decode($string, 'xml')) and the Xml::parse() method no longer process XML external entities.
• The Panel can no longer be embedded in HTML frames.

3.5.8.2

🚨 Security release

User enumeration in the code-based login and password reset forms

Severity: medium (CVSS score 4.8)

Errors that occur during the processing of the code-based login and password reset were in some cases passed to the user. This includes errors of the code challenge itself (e.g. if the email could not be sent) and errors thrown inside the user.login:failed hook.

This vulnerability allowed user enumeration, which is a type of vulnerability that allows attackers to confirm which users are registered in a Kirby installation. This information can be abused for social engineering attacks against users of the site or to find out the organizational structure of the company.

This vulnerability only affects you if you are using the code or password-reset auth method with the auth.methods option. It can only be successfully exploited under server configuration conditions outside of the attacker's control.

Thanks to Florian Merz (@​florianmrz) of hatchery.io for responsibly reporting the identified issue.

User enumeration in the brute force protection

... (truncated)

Commits

• b9ac70d Update version number and autoloader
• 8cfc30e Update cert bundle
• 2f73bf7 Remove cypress
• 771d25e Fix password length vulnerability
• b5bbcf6 Fix XXE vulnerability
• dc9b105 Invalidate session on password change
• a8152bf Fix MIME detection vulnerability
• d01f7e2 Fix KirbyData BOM vulnerability
• 7c03148 Prevent Panel from being embedded in frames
• 94a9abd Fix check for exception details in Auth::verifyChallenge as well
• Additional commits viewable in compare view

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