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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.
==========================================================================Ubuntu Security Notice USN-6758-1April 30, 2024node-json5 vulnerability==========================================================================A security issue affects these releases of Ubuntu and its derivatives:- Ubuntu 22.04 LTS- Ubuntu 20.04 LTS- Ubuntu 18.04 LTSSummary:JSON5 could allow unintended access to network services or have otherunspecified impact.Software Description:- node-json5: JSON for the ES5 eraDetails:It was discovered that the JSON5 parse method incorrectly handled the parsingof keys named __proto__. An attacker could possibly use this issue to pollutethe prototype of the returned object, setting arbitrary or unexpected keys, andcause a denial of service, allow unintended access to network services or haveother unspecified impact, depending on the application's use of the module.Update instructions:The problem can be corrected by updating your system to the followingpackage versions:Ubuntu 22.04 LTS node-json5 2.2.0+dfsg-1ubuntu0.1~esm1 Available with Ubuntu ProUbuntu 20.04 LTS node-json5 0.5.1-3ubuntu0.1Ubuntu 18.04 LTS node-json5 0.5.1-1ubuntu0.1~esm1 Available with Ubuntu ProAfter a standard system update you may need to restart any services that usethe library to make all the necessary changes.References: https://ubuntu.com/security/notices/USN-6758-1 CVE-2022-46175Package Information: https://launchpad.net/ubuntu/+source/node-json5/0.5.1-3ubuntu0.1Related news
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The `parse` method of the JSON5 library before and including version `2.2.1` does not restrict parsing of keys named `__proto__`, allowing specially crafted strings to pollute the prototype of the resulting object. This vulnerability pollutes the prototype of the object returned by `JSON5.parse` and not the global Object prototype, which is the commonly understood definition of Prototype Pollution. However, polluting the prototype of a single object can have significant security impact for an application if the object is later used in trusted operations. ## Impact This vulnerability could allow an attacker to set arbitrary and unexpected keys on the object returned from `JSON5.parse`. The actual impact will depend on how applications utilize the returned object and how they filter unwanted keys, but could include denial of service, cross-site scripting, elevation of privilege, and in extreme cases, remote code execution. ## Mitigation This vulnerability is patched in json v2.2.2 and...
JSON5 is an extension to the popular JSON file format that aims to be easier to write and maintain by hand (e.g. for config files). The `parse` method of the JSON5 library before and including version `2.2.1` does not restrict parsing of keys named `__proto__`, allowing specially crafted strings to pollute the prototype of the resulting object. This vulnerability pollutes the prototype of the object returned by `JSON5.parse` and not the global Object prototype, which is the commonly understood definition of Prototype Pollution. However, polluting the prototype of a single object can have significant security impact for an application if the object is later used in trusted operations. This vulnerability could allow an attacker to set arbitrary and unexpected keys on the object returned from `JSON5.parse`. The actual impact will depend on how applications utilize the returned object and how they filter unwanted keys, but could include denial of service, cross-site scripting, elevation of...