Lesson plan
Prototype pollution
Prototype pollution is a class of vulnerabilities in prototype-based languages such as JavaScript runtimes that allows attackers to overwrite arbitrary properties in an object's root prototype. In a prototype pollution attack, attackers inject properties into existing JavaScript construct prototypes with unsafe merges. Prototype pollution can affect client-side and server-side runtimes. Using prototype pollution to modify properties called by gadgets could lead to Denial of Service (DoS) attacks, code execution, or privilege escalation.
Article summary
Prototype pollution is a class of vulnerabilities in prototype-based languages such as JavaScript runtimes that allows attackers to overwrite arbitrary properties in an object's root prototype. In a prototype pollution attack, attackers inject properties into existing JavaScript construct prototypes with unsafe merges. Prototype pollution can affect client-side and server-side runtimes. Using prototype pollution to modify properties called by gadgets could lead to Denial of Service (DoS) attacks, code execution, or privilege escalation.
Key claims
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Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
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Key claims and bibliography are generated from the same tracked claims and sources as the article page.