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bnomei / kirby3-lapse

Cache any data until set expiration time
https://forum.getkirby.com/t/kirby3-lapse-cache-any-data-until-set-expiration-time-with-automatic-keys/23586
MIT License
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Bump getkirby/cms from 3.5.5 to 3.5.8 #13

Closed dependabot[bot] closed 3 years ago

dependabot[bot] commented 3 years ago

Bumps getkirby/cms from 3.5.5 to 3.5.8.

Release notes

Sourced from getkirby/cms's releases.

3.5.8

Security release

This security release fixes two cross-site scripting (XSS) vulnerabilities from writer field and image block content printed in the site frontend.

Severity: medium (CVSS score 5.4)

Writer field

Impact

Kirby's writer field stores its formatted content as HTML code. Unlike with other field types, it is not possible to escape HTML special characters against cross-site scripting (XSS) attacks, otherwise the formatting would be lost.

Cross-site scripting (XSS) is a type of vulnerability that allows to execute any kind of JavaScript code inside the site frontend or Panel session of other users. If the user is logged in to the Panel, a harmful script can for example trigger requests to Kirby's API with the permissions of the victim.

Because the writer field did not securely sanitize its contents on save, it was possible to inject malicious HTML code into the content file by sending it to Kirby's API directly without using the Panel. This malicious HTML code would then be displayed on the site frontend and executed in the browsers of site visitors and logged in users who are browsing the site.

This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users. They can escalate their privileges if they get access to the Panel session of an admin user. Depending on your site, other JavaScript-powered attacks are possible.

You are not affected if you don't use the writer field in any of your blueprints. The attack can only be performed by logged-in users and only surfaces in the site frontend (i.e. in your templates). The Panel itself is unaffected and will not execute JavaScript that was injected into writer field content.

Patches

We have patched the vulnerability in this release by sanitizing all writer field contents on the backend whenever the content is modified via Kirby's API. Please update to this or a later version (including Kirby 3.6.0) to fix the vulnerability.

More information

You can find more details like the CVE ID of this vulnerability on its security advisory page.

Image block

Impact

Kirby's blocks field stores structured data for each block. This data is then used in block snippets to convert the blocks to HTML for use in your templates. We recommend to escape HTML special characters against cross-site scripting (XSS) attacks.

Cross-site scripting (XSS) is a type of vulnerability that allows to execute any kind of JavaScript code inside the site frontend or Panel session of other users. If the user is logged in to the Panel, a harmful script can for example trigger requests to Kirby's API with the permissions of the victim.

The default snippet for the image block unfortunately did not use our escaping helper. This made it possible to include malicious HTML code in the source, alt and link fields of the image block, which would then be displayed on the site frontend and executed in the browsers of site visitors and logged in users who are browsing the site.

This vulnerability is critical if you might have potential attackers in your group of authenticated Panel users. They can escalate their privileges if they get access to the Panel session of an admin user. Depending on your site, other JavaScript-powered attacks are possible.

You are not affected if you don't use the blocks field or specifically the image block in any of your blueprints. You are also protected if you use a custom block snippet that either escapes the printed values or doesn't use them. The attack can only be performed by logged-in users and only surfaces in the site frontend (i.e. in your templates). The Panel itself is unaffected and will not execute JavaScript that was injected into the image block content.

Patches

We have patched the vulnerability in this release by escaping special HTML characters in the output from the default image block snippet. Please update to this or a later version (including Kirby 3.6.0) to fix the vulnerability.

More information

You can find more details like the CVE ID of this vulnerability on its security advisory page.

... (truncated)

Commits
  • 25fc5c6 Merge pull request from GHSA-x7j7-qp7j-hw3q
  • 11f5933 Update version number; composer update
  • 4ae9d53 Backport default image block snippet from 3.6.0
  • f64364a Backport writer field fix from 3.6.0
  • c77ccb8 Update Collection::filterBy() type hints
  • cc36937 Update version number
  • 017ff53 Merge pull request #3483 from getkirby/fix/3482-layouts-empty
  • 82ab7e3 Add unit tests for -toBlocks() and ->toLayouts() field methods #3482
  • 57239e7 Fix layouts field parsing empty value #3482
  • 3395389 Merge pull request #3475 from getkirby/release/3.5.7
  • Additional commits viewable in compare view


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dependabot[bot] commented 3 years ago

Looks like getkirby/cms is up-to-date now, so this is no longer needed.