[PM-13826] [deps]: Update MessagePack to 2.5.187 [SECURITY]

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
MessagePack (source)	2.5.172 -> 2.5.187

GitHub Vulnerability Alerts

CVE-2024-48924

Impact

When this library is used to deserialize messagepack data from an untrusted source, there is a risk of a denial of service attack by an attacker that sends data contrived to produce hash collisions, leading to large CPU consumption disproportionate to the size of the data being deserialized.

This is similar to a prior advisory, which provided an inadequate fix for the hash collision part of the vulnerability.

Patches

The following steps are required to mitigate this risk.

1. Upgrade to a version of the library where a fix is available.
2. Review the steps in this previous advisory to ensure you have your application configured for untrusted data.

Workarounds

If upgrading MessagePack to a patched version is not an option for you, you may apply a manual workaround as follows:

1. Declare a class that derives from MessagePackSecurity.
2. Override the GetHashCollisionResistantEqualityComparer<T> method to provide a collision-resistant hash function of your own and avoid calling base.GetHashCollisionResistantEqualityComparer<T>().
3. Configure a MessagePackSerializerOptions with an instance of your derived type by calling WithSecurity on an existing options object.
4. Use your custom options object for all deserialization operations. This may be by setting the MessagePackSerializer.DefaultOptions static property, if you call methods that rely on this default property, and/or by passing in the options object explicitly to any Deserialize method.

References

• Learn more about best security practices when reading untrusted data with MessagePack 1.x or MessagePack 2.x.
• The .NET team's discussion on hash collision vulnerabilities of their HashCode struct (or in the pull request that merges this into the dotnet org).

For more information

If you have any questions or comments about this advisory:

• Start a public discussion
• Email us privately

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Release Notes

MessagePack-CSharp/MessagePack-CSharp (MessagePack)

v2.5.187

Changes:

• #​2014: Use a collision-resistant hash algorithm for untrusted data to address GHSA-4qm4-8hg2-g2xm
• #​2010: Update published security policy

This list of changes was auto generated.

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Configuration

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PM-13826

[withinfocus]

This is removed in #4909.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 41.75%. Comparing base (1fb366d) to head (e18bc68).
Report is 1 commits behind head on main.

Additional details and impacted files

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  Coverage   41.75%   41.75%           
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  Files        1363     1363           
  Lines       63915    63915           
  Branches     5853     5853           
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  Hits        26686    26686           
  Misses      36026    36026           
  Partials     1203     1203           

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[bitwarden-bot]

Internal tracking:

• ID: PM-13826
• Link: https://bitwarden.atlassian.net/browse/PM-13826