Potentially unintended unmarshalling of user-provided objects in MemCacheStore and RedisCacheStore
There is potentially unexpected behaviour in the MemCacheStore and RedisCacheStore where, when
untrusted user input is written to the cache store using the raw: true parameter, re-reading the result
from the cache can evaluate the user input as a Marshalled object instead of plain text. Vulnerable code looks like:
data = cache.fetch("demo", raw: true) { untrusted_string }
Versions Affected: rails < 5.2.5, rails < 6.0.4
Not affected: Applications not using MemCacheStore or RedisCacheStore. Applications that do not use the raw option when storing untrusted user input.
Fixed Versions: rails >= 5.2.4.3, rails >= 6.0.3.1
Impact
Unmarshalling of untrusted user input can have impact up to and including RCE. At a minimum,
this vulnerability allows an attacker to inject untrusted Ruby objects into a web application.
In addition to upgrading to the latest versions of Rails, developers should ensure that whenever
they are calling Rails.cache.fetch they are using consistent values of the raw parameter for both
In this version, we fixed warnings when used with Ruby 2.7 across the entire framework.
Following are the list of other changes, per-framework.
Active Support
Array#to_sentence no longer returns a frozen string.
Before:
['one', 'two'].to_sentence.frozen?
# => true
After:
['one', 'two'].to_sentence.frozen?
# => false
Nicolas Dular
Update ActiveSupport::Messages::Metadata#fresh? to work for cookies with expiry set when
ActiveSupport.parse_json_times = true.
Christian Gregg
Active Model
No changes.
Active Record
Recommend applications don't use the database kwarg in connected_to
The database kwarg in connected_to was meant to be used for one-off scripts but is often used in requests. This is really dangerous because it re-establishes a connection every time. It's deprecated in 6.1 and will be removed in 6.2 without replacement. This change soft deprecates it in 6.0 by removing documentation.
Eileen M. Uchitelle
Fix support for PostgreSQL 11+ partitioned indexes.
Sebastián Palma
Add support for beginless ranges, introduced in Ruby 2.7.
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Bumps activesupport from 5.2.2.1 to 6.0.3.1. This update includes a security fix.
Vulnerabilities fixed
Sourced from The Ruby Advisory Database.
Release notes
Sourced from activesupport's releases.
Changelog
Sourced from activesupport's changelog.
Commits
34991a6
Preparing for 6.0.3.1 release2c8fe2a
bumping version, updating changelog0ad524a
update changelogbd39a13
activesupport: Deprecate Marshal.load on raw cache read in RedisCacheStore0a7ce52
activesupport: Avoid Marshal.load on raw cache value in MemCacheStoreb738f19
Preparing for 6.0.3 release509b9da
Preparing for 6.0.3.rc1 release02d07cc
adds missing require [Fixes #39042]f2f7bcc
Fix Builder::XmlMarkup lazy load in Array#to_xml320734e
Merge pull request #36941 from ts-3156/masterDependabot 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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