Ubuntu Security Update USN-4922-2: Ruby vulnerability

[LinuxBot]

USN-4922-1 fixed a vulnerability in Ruby. This update provides the corresponding update for Ubuntu 21.04. Original advisory details: Juho Nurminen discovered that the REXML gem bundled with Ruby incorrectly parsed and serialized XML documents. A remote attacker could possibly use this issue to perform an XML round-trip attack.

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