[Security] Bump dompurify from 1.0.1 to 2.0.7

[dependabot-preview]

Bumps dompurify from 1.0.1 to 2.0.7. This update includes security fixes.

Vulnerabilities fixed

Sourced from The GitHub Security Advisory Database.

Cross-Site Scripting in dompurify Versions of dompurify prior to 2.0.7 are vulnerable to Cross-Site Scripting (XSS). It is possible to bypass the package sanitization through Mutation XSS, which may allow an attacker to execute arbitrary JavaScript in a victim's browser.

Recommendation

Upgrade to version 2.0.7 or later.

Affected versions: < 2.0.7

Sourced from The GitHub Security Advisory Database.

Cross-Site Scripting in dompurify DOMPurify before 2.0.1 allows XSS because of innerHTML mutation XSS (mXSS) for an SVG element or a MATH element, as demonstrated by Chrome and Safari.

Affected versions: < 2.0.3

Release notes

Sourced from dompurify's releases.

DOMPurify 2.0.7

• Fixed several mXSS vectors spotted , thanks @masatokinugawa 🙇‍♂️
• 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 🙇‍♂️ 🙇‍♀️!

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 🙇‍♂️ 🙇‍♀️

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. 🙇

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

Commits

• da46633 Merge branch 'master' of git@github.com:cure53/DOMPurify.git
• dc20713 Expanded the credits section
• 56b9e9c Fixed a reference error in MSIE11, see #372
• 42642ab Preparing 2.0.7 release
• 39d6a3d Merge branch 'master' of github.com:cure53/DOMPurify
• 0fe9c6b Merge pull request #371 from strugee/patch-1
• 73b5d46 Fix typos
• 7505686 Added missing modifier flag
• a63c1cb Added math to namespaces to look out for
• 884e248 Fixed the tests to reflect the new sanitzer checks
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #270.