Improper Input Validation Affecting rubygem-psych package, versions <0:3.0.2-107.module+el8.4.0+10822+fe4fffb1


Severity

Recommended
medium

Based on CentOS security rating

    Threat Intelligence

    EPSS
    0.63% (80th percentile)

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  • Snyk ID SNYK-CENTOS8-RUBYGEMPSYCH-2112703
  • published 26 Jul 2021
  • disclosed 19 Mar 2020

How to fix?

Upgrade Centos:8 rubygem-psych to version 0:3.0.2-107.module+el8.4.0+10822+fe4fffb1 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.

The JSON gem through 2.2.0 for Ruby, as used in Ruby 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5, has an Unsafe Object Creation Vulnerability. This is quite similar to CVE-2013-0269, but does not rely on poor garbage-collection behavior within Ruby. Specifically, use of JSON parsing methods can lead to creation of a malicious object within the interpreter, with adverse effects that are application-dependent.

References

CVSS Scores

version 3.1
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NVD

7.5 high
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    High
  • Availability (A)
    None
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Red Hat

7.3 high
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SUSE

8 high