Double Free Affecting rubygem-psych package, versions <0:3.3.2-141.module+el8.6.0+16311+3e5e17e9


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.32% (71st percentile)

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  • Snyk ID SNYK-CENTOS8-RUBYGEMPSYCH-2765604
  • published 15 Apr 2022
  • disclosed 14 Apr 2022

How to fix?

Upgrade Centos:8 rubygem-psych to version 0:3.3.2-141.module+el8.6.0+16311+3e5e17e9 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream rubygem-psych package and not the rubygem-psych package as distributed by Centos. See How to fix? for Centos:8 relevant fixed versions and status.

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.

CVSS Scores

version 3.1
Expand this section

NVD

9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
Expand this section

Red Hat

7.7 high