Description Preview
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 versions 1.0.1 and 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 privilege, and in extreme cases, remote code execution. JSON5.parse
should restrict parsing of __proto__
keys when parsing JSON strings to objects. As a point of reference, the JSON.parse
method included in JavaScript ignores __proto__
keys. Simply changing JSON5.parse
to JSON.parse
in the examples above mitigates this vulnerability. This vulnerability is patched in json5 versions 1.0.2, 2.2.2, and later.
Industry ExposureMost to leastThis section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.
- ManufacturingManufacturing
- Professional, Scientific, & Technical ServicesProfessional, Scientific, & Technical Services
- Public AdministrationPublic Administration
- Health Care & Social AssistanceHealth Care & Social Assistance
- Finance and InsuranceFinance and Insurance
- Retail TradeRetail Trade
- Transportation & WarehousingTransportation & Warehousing
- Educational ServicesEducational Services
- Arts, Entertainment & RecreationArts, Entertainment & Recreation
- Management of Companies & EnterprisesManagement of Companies & Enterprises
- Other Services (except Public Administration)Other Services (except Public Administration)
- Agriculture, Forestry Fishing & HuntingAgriculture, Forestry Fishing & Hunting
- UtilitiesUtilities
- Wholesale TradeWholesale Trade
- Accommodation & Food ServicesAccommodation & Food Services
- Administrative, Support, Waste Management & Remediation ServicesAdministrative, Support, Waste Management & Remediation Services
- ConstructionConstruction
- InformationInformation
- MiningMining
- Real Estate Rental & LeasingReal Estate Rental & Leasing