1. Ubuntu Security Notices
  2. USN-6758-1

USN-6758-1: JSON5 vulnerability

Publication date

30 April 2024

Overview

JSON5 could allow unintended access to network services or have other unspecified impact.

Releases

Packages

Details

It was discovered that the JSON5 parse method incorrectly handled the parsing
of keys named __proto__. An attacker could possibly use this issue to pollute
the prototype of the returned object, setting arbitrary or unexpected keys, and
cause a denial of service, allow unintended access to network services or have
other unspecified impact, depending on the application’s use of the module.

It was discovered that the JSON5 parse method incorrectly handled the parsing
of keys named __proto__. An attacker could possibly use this issue to pollute
the prototype of the returned object, setting arbitrary or unexpected keys, and
cause a denial of service, allow unintended access to network services or have
other unspecified impact, depending on the application’s use of the module.

Update instructions

After a standard system update you may need to restart any services that use the library to make all the necessary changes.

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
22.04 jammy node-json5 –  2.2.0+dfsg-1ubuntu0.1~esm1  
20.04 focal node-json5 –  0.5.1-3ubuntu0.1
18.04 bionic node-json5 –  0.5.1-1ubuntu0.1~esm1  

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References

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