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propublica / facebook-political-ads

Monitoring Facebook Political Ads
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Bump dompurify from 1.0.8 to 2.0.7 in /backend/server/public #98

Closed dependabot[bot] closed 3 years ago

dependabot[bot] commented 4 years ago

Bumps dompurify from 1.0.8 to 2.0.7.

Release notes

Sourced from dompurify's releases.

DOMPurify 2.0.7

  • Fixed several mXSS vectors spotted , thanks @masatokinugawa :bowing_man:
  • Fixed a minor crash affecting MSIE11, see #372
  • Fixed some typos and adjusted the README

DOMPurify 2.0.6

  • Enhanced the checks for SVG-/MathML-based mXSS
  • Removed several obtrusive checks and guards that are not needed any longer
  • Added better test coverage
  • Added better handling of situations where element removal causes mXSS
  • Added better handling of content type switches causing mXSS

DOMPurify 2.0.5

  • Fixed a logical issue causing overly aggressive SVG removal spotted by @thorn0

DOMPurify 2.0.4

Another mXSS variation was spotted by @masatokinugawa and got addressed and fixed in this release.

The fixes were reviewed and no new bypasses could be spotted at the moment. Thanks, @masatokinugawa :bowing_man: :bowing_woman:!

The sanitization logic for this kind of mXSS was changed to be less aggressive and still be able to spot all recent mXSS variations we know about right now - while also avoiding risky string matching.

Prayers and thoughts that this was the final variation. But better be on the lookout for more releases soon.

DOMPurify 2.0.3

  • Fixed another mXSS variation affecting Chrome, Safari and Edge relating to HTML templates
  • Fixed a bug in the config parser leading to unexpected results

Credits for the bypass again go to Michał Bentkowski (@securityMB) of Securitum who spotted the bug in Chrome, turned it into another DOMPurify bypass, reported and helped verifying the fix :bowing_man: :bowing_woman:

DOMPurify 2.0.2

Following the release of DOMPurify 2.0.1, a more thorough internal audit against Blink-based mXSS bugs was conducted. Several mXSS variations, spotted by @masatokinugawa were addressed and fixed. The fixes were reviewed and so far no new bypasses could be spotted.

This release manages to find what is believed to be a more holistic way to prevent mXSS bugs, specifically coming from HTML attributes and tags nested inside SVG and MathML.

Further, this release also addresses a DoS problem caused by sanitization of HTML tables when configured with potentially conflicting configuration settings.

DOMPurify 2.0.1

  • Fixed a bypass affecting latest Chrome, caused by a newly discovered Chrome mXSS vulnerability
  • Added tests to cover implemented fixes

Credits go to Michał Bentkowski (@SecurityMB) of Securitum who spotted the bug in Chrome, turned it into a DOMPurify bypass, reported and helped verifying the fix. :bow:

DOMPurify 2.0.0

Note: This release makes sure that, by default only string objects are returned (if not specified otherwise). This change relates to a surprising behavior in Chrome 77 - having to do with Trusted Types.

  • Changed the default behavior for Trusted Types (See #361)
  • Added a new config flag to manually enable Trusted Types support
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dependabot[bot] commented 3 years ago

Superseded by #101.