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[Security] Bump actionpack from 6.0.3.3 to 6.0.3.4

Merged Administrator requested to merge dependabot/bundler/actionpack-6.0.3.4 into master

Created by: dependabot-preview[bot]

Bumps actionpack from 6.0.3.3 to 6.0.3.4. This update includes a security fix.

Vulnerabilities fixed

Sourced from The Ruby Advisory Database.

Possible XSS Vulnerability in Action Pack in Development Mode There is a possible XSS vulnerability in Action Pack while the application server is in development mode. This vulnerability is in the Actionable Exceptions middleware. This vulnerability has been assigned the CVE identifier CVE-2020-8264.

Versions Affected: >= 6.0.0 Not affected: < 6.0.0 Fixed Versions: 6.0.3.4

Impact

When an application is running in development mode, and attacker can send or embed (in another page) a specially crafted URL which can allow the attacker to execute JavaScript in the context of the local application.

Workarounds

Until such time as the patch can be applied, application developers should disable the Actionable Exceptions middleware in their development environment via a line such as this one in their config/environment/development.rb:

Patched versions: >= 6.0.3.4 Unaffected versions: < 6.0.0

Changelog

Sourced from actionpack's changelog.

Rails 6.0.3.4 (October 07, 2020)

  • [CVE-2020-8264] Prevent XSS in Actionable Exceptions
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