NDLI: Preventing injection attacks with syntax embeddings

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Preventing injection attacks with syntax embeddings

Content Provider	ACM Digital Library
Author	Visser, Eelco Bravenboer, Martin Dolstra, Eelco
Abstract	Software written in one language often needs to construct sentences in another language, such as SQL queries, XML output, or shell command invocations. This is almost always done using unhygienic string manipulation, the concatenation of constants and client-supplied strings. A client can then supply specially crafted input that causes the constructed sentence to be interpreted in an unintended way, leading to an injection attack. We describe a more natural style of programming that yields code that is impervious to injections by construction. Our approach embeds the grammars of the guest languages (e.g., SQL) into that of the host language (e.g., Java) and automatically generates code that maps the embedded language to constructs in the host language that reconstruct the embedded sentences, adding escaping functions where appropriate. This approach is generic, meaning that it can be applied with relative ease to any combination of host and guest languages.
Starting Page	3
Ending Page	12
Page Count	10
File Format	PDF
ISBN	9781595938558
DOI	10.1145/1289971.1289975
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2007-10-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Syntax embedding Injection attacks Stringborg
Content Type	Text
Resource Type	Article

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