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 cve@mitre.org

Affected SoftwareAffected VersionHow to fix
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
redhat/rubygem-json<2.3.0
2.3.0
Json Project Json<=2.2.0
Ruby-lang Ruby>=2.4.0<=2.4.9
Ruby-lang Ruby>=2.5.0<=2.5.7
Ruby-lang Ruby>=2.6.0<=2.6.5
Fedoraproject Fedora=30
Fedoraproject Fedora=31
openSUSE Leap=15.1
Debian Debian Linux=8.0
Debian Debian Linux=10.0
Apple macOS=11.0.1
Apple macOS Big Sur<11.0.1
11.0.1
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

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.

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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.

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