json Gem for Ruby Unsafe Object Creation Vulnerability (additional fix)
There is an unsafe object creation vulnerability in the json gem bundled with
Ruby. This vulnerability has been assigned the CVE identifier CVE-2020-10663.
We strongly recommend upgrading the json gem.
Details
When parsing certain JSON documents, the json gem (including the one bundled
with Ruby) can be coerced into creating arbitrary objects in the target system.
This is the same issue as CVE-2013-0269. The previous fix was incomplete, which
addressed JSON.parse(user_input), but didn’t address some other styles of JSON
parsing including JSON(user_input) and JSON.parse(user_input, nil).
See CVE-2013-0269 in detail. Note that the issue was exploitable to cause a
Denial of Service by creating many garbage-uncollectable Symbol objects, but
this kind of attack is no longer valid because Symbol objects are now
garbage-collectable. However, creating arbitrary objects may cause severe
security consequences depending upon the application code.
Spelling and grammar fixes for comments. Pull request #191 by Josh
Kline.
Enhance generic JSON and #generate docs. Pull request #347 by Victor
Shepelev.
Add :nodoc: for GeneratorMethods. Pull request #349 by Victor Shepelev.
Baseline changes to help (JRuby) development. Pull request #371 by Karol
Bucek.
Add metadata for rubygems.org. Pull request #379 by Alexandre ZANNI.
Remove invalid JSON.generate description from JSON module rdoc. Pull
request #384 by Jeremy Evans.
Test with TruffleRuby in CI. Pull request #402 by Benoit Daloze.
Rdoc enhancements. Pull request #413 by Burdette Lamar.
Fixtures/ are not being tested... Pull request #416 by Marc-André
Lafortune.
Use frozen string for hash key. Pull request #420 by Marc-André
Lafortune.
Added :call-seq: to RDoc for some methods. Pull request #422 by Burdette
Lamar.
Small typo fix. Pull request #423 by Marc-André Lafortune.
2019-12-11 (2.3.0)
Fix default of create_additions to always be false for JSON(user_input)
and JSON.parse(user_input, nil).
Note that JSON.load remains with default true and is meant for internal
serialization of trusted data. [CVE-2020-10663]
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Bumps json from 2.1.0 to 2.5.1. This update includes a security fix.
Vulnerabilities fixed
Sourced from The Ruby Advisory Database.
Changelog
Sourced from json's changelog.
Commits
9dc86f9Bump version to 2.5.191f5fdfMerge pull request #459 from flori/backword-compatible5910befAdded backword compatible for < json-2.5ea58503Bump version to 2.5.09e73da3Merge pull request #457 from flori/prepare-3.00c446faWorkaround for JRuby951c7d1Drop to tests with too old Rubyd1a341fSkip tests with JRuby platformdece237Guard for Ruby 3.0147cbfaUse 2.7 in TravisDependabot 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
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