high
7.5
CWE
20 94
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2020-10663: Input Validation

First published: Thu Mar 19 2020(Updated: )

A flaw was found in rubygem-json. While parsing certain JSON documents, the json gem (including the one bundled with Ruby) can be coerced into creating arbitrary objects in the target system. This is the same issue as CVE-2013-0269.

Credit: Jeremy Evans cve@mitre.org

Affected SoftwareAffected VersionHow to fix
rubygems/json<2.3.0
2.3.0
redhat/pcs<0:0.10.4-6.el8_2.1
0:0.10.4-6.el8_2.1
redhat/pcs<0:0.10.1-4.el8_0.5
0:0.10.1-4.el8_0.5
redhat/pcs<0:0.10.2-4.el8_1.1
0:0.10.2-4.el8_1.1
redhat/rh-ruby25-ruby<0:2.5.9-9.el7
0:2.5.9-9.el7
redhat/rh-ruby26-ruby<0:2.6.7-119.el7
0:2.6.7-119.el7
debian/ruby-json
2.1.0+dfsg-2+deb10u1
2.3.0+dfsg-1
2.6.3+dfsg-1
debian/ruby2.5
2.5.5-3+deb10u4
2.5.5-3+deb10u6
debian/ruby2.7
2.7.4-1+deb11u1
redhat/rubygem-json<2.3.0
2.3.0
Apple macOS<11.0.1
11.0.1
JSON project JSON Ruby<=2.2.0
Ruby>=2.4.0<=2.4.9
Ruby>=2.5.0<=2.5.7
Ruby>=2.6.0<=2.6.5
Fedoraproject Fedora=30
Fedoraproject Fedora=31
openSUSE=15.1
Debian GNU/Linux=8.0
Debian GNU/Linux=10.0
Apple macOS=11.0.1

Remedy

To mitigate this vulnerability, do not supply untrusted user input and/or untrusted strings to the following method calls or utilize code libraries which do so: ``` JSON(user_input) JSON[user_input, nil] JSON.parse(user_input, nil) JSON::Parser.new(user_input).parse ``` Also note that JSON.load() should never be given input from unknown sources.

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2020-10663?

    CVE-2020-10663 is an Unsafe Object Creation Vulnerability in the JSON gem for Ruby.

  • What software is affected by CVE-2020-10663?

    Ruby versions 2.4 through 2.4.9, 2.5 through 2.5.7, and 2.6 through 2.6.5 are affected by CVE-2020-10663.

  • How severe is CVE-2020-10663?

    CVE-2020-10663 has a severity value of 7, which is considered high.

  • What is the remedy for CVE-2020-10663?

    To fix CVE-2020-10663, update your Ruby installation to a version that includes the fix.

  • Where can I find more information about CVE-2020-10663?

    You can find more information about CVE-2020-10663 on the CVE website, NIST vulnerability database, Ruby's official website, and Red Hat's bugzilla and errata pages.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203