Ubuntu Security Notice USN-6758-1

Ubuntu Security Notice 6758-1 - 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.

access attacker denial of service issue keys network network services notice object parsing prototype security security notice service services ubuntu usn