Exploit/Advisories

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Ubuntu Security Notice USN-6103-1
May 24, 2023

node-json-schema vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS

Summary:

JSON Schema could be made to crash or run programs if it opened specially
crafted input.

Software Description:
- node-json-schema: A vocabulary that allows you to validate, annotate, and
manipulate JSON files

Details:

It was discovered that JSON Schema incorrectly handled certain inputs. If a
user or an automated system were tricked into opening a specially crafted
input file, a remote attacker could possibly use this issue to exploit
JavaScript runtimes and cause a denial of service or execute arbitrary code.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS:
node-json-schema 0.2.3-1+deb10u1build0.20.04.1

Ubuntu 18.04 LTS:
node-json-schema 0.2.3-1+deb10u1build0.18.04.1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6103-1
CVE-2021-3918

Package Information:

https://launchpad.net/ubuntu/+source/node-json-schema/0.2.3-1+deb10u1build0.20.04.1

https://launchpad.net/ubuntu/+source/node-json-schema/0.2.3-1+deb10u1build0.18.04.1