NDLI: Practical automated filter generation to explicitly enforce implicit input assumptions

Content Provider	IEEE Xplore Digital Library
Author	Razmov, V. Simon, D.R.
Copyright Year	2001
Description	Author affiliation: Univ. of Washington, DC, USA (Razmov, V.)
Abstract	Vulnerabilities in distributed applications are being uncovered and exploited faster than software engineers can, patch the security holes. All too often these weaknesses result from implicit assumptions made by an application about its inputs. One approach to defending against their exploitation is to interpose a filter between the input source and the application that verifies that the application's assumptions about its inputs actually hold. However, ad hoc design of such filters is nearly as tedious and error-prone as patching the original application itself. We have automated the filter generation process based on a simple formal description of a broad class of assumptions about the inputs to an application. Focusing on the back-end server application case, we have prototyped an easy-to-use tool that generates server-side filtering scripts. These can then be quickly installed on a front-end webs server (either in concert with the application or., when a vulnerability is uncovered), thus shielding the server application from a variety of existing and exploited, attacks, as solutions requiring changes to the applications are developed and tested. Our measurements suggest that input filtering can be done efficiently and should not be a performance concern for moderately loaded web servers. The overall approach may be generalizable to other domains, such as firewall filter generation and API wrapper filter generation.
Sponsorship	Appl. Comput. Security Associates
Starting Page	347
Ending Page	357
File Size	258043
Page Count	11
File Format	PDF
ISBN	0769514057
DOI	10.1109/ACSAC.2001.991551
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2001-12-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Filters Filtering Testing Data security Programming profession Read only memory Prototypes Web server
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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