USN-7442-1: Ruby vulnerabilities

17 April 2025

Several security issues were fixed in Ruby.

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Releases

Packages

  • ruby2.3 - Object-oriented scripting language
  • ruby2.5 - Object-oriented scripting language

Details

It was discovered that the Ruby CGI gem incorrectly handled parsing certain
cookies. A remote attacker could possibly use this issue to consume
resources, leading to a denial of service. (CVE-2025-27219)

It was discovered that the Ruby CGI gem incorrectly handled parsing certain
regular expressions. A remote attacker could possibly use this issue to
consume resources, leading to a denial of service. (CVE-2025-27220)

It was discovered that the Ruby URI gem incorrectly handled certain URI
handling methods. A remote attacker could possibly use this issue to leak
authentication credentials. (CVE-2025-27221)

It was discovered that the Ruby REXML gem incorrectly handled parsing XML
documents containing many digits in a hex numeric character reference. A
remote attacker could use this issue to consume resources, leading to a
denial of service. (CVE-2024-49761)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 18.04
Ubuntu 16.04

In general, a standard system update will make all the necessary changes.

References

Related notices

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