Created by: dependabot-preview[bot]
Bumps activesupport from 6.0.3 to 6.0.3.1. This update includes a security fix.
Vulnerabilities fixed
Sourced from The Ruby Advisory Database.
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 >= 6.0.3.1Impact
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
... (truncated)Rails.cache.fetch
they are using consistent values of theraw
parameter for bothPatched versions: ~> 5.2.4.3; >= 6.0.3.1 Unaffected versions: none
Changelog
Sourced from activesupport's changelog.
Rails 6.0.3.1 (May 18, 2020)
[CVE-2020-8165] Deprecate Marshal.load on raw cache read in RedisCacheStore
[CVE-2020-8165] Avoid Marshal.load on raw cache value in MemCacheStore
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