We've been contacted by the security researcher Thore Imhof of Accenture with a vulnerability report that affects file uploads in Kirby's Panel.
An editor with full access to the Panel can upload a PHP .phar file and execute it on the server. This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users, as they can gain access to the server with such a phar file. Visitors without Panel access cannot use this attack vector.
We've received this report yesterday and this release will prevent the attack.
We recommend to upgrade your sites to Kirby 3.4.5.
This security release does not introduce any features or other fixes.
Commits
db8f371 Merge pull request #2962 from getkirby/fix/upload-validation
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Bumps getkirby/cms from 3.4.4 to 3.4.5.
Release notes
Sourced from getkirby/cms's releases.
Commits
db8f371
Merge pull request #2962 from getkirby/fix/upload-validationdbe293c
Update version number and composer.lockabc9e12
Cleanup98e037d
Add PHP Phar archives to the list of risky files43260a3
Never publish risky files to the media folder197f7d5
New FileRules::validFile() methodDependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting
@dependabot rebase
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