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CVE-2022-28738

Publication date 9 May 2022

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

9.8 · Critical

Score breakdown

A double free was found in the Regexp compiler in Ruby 3.x before 3.0.4 and 3.1.x before 3.1.2. If a victim attempts to create a Regexp from untrusted user input, an attacker may be able to write to unexpected memory locations.

Status

Package Ubuntu Release Status
ruby2.3 16.04 LTS xenial
Not affected
ruby2.5 18.04 LTS bionic
Not affected
ruby2.7 22.04 LTS jammy Not in release
21.10 impish
Not affected
20.04 LTS focal
Not affected
ruby3.0 22.10 kinetic
Not affected
22.04 LTS jammy
Fixed 3.0.2-7ubuntu2.1

Severity score breakdown

Parameter Value
Base score 9.8 · Critical
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H