Detecting second-order security vulnerabilities via modelling information flow through persistent storage
US11734432B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 30, 2021 |
| Grant date | Aug 22, 2023 |
| Priority date | — |
| Expiry date | Dec 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/033
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method may include determining that a source variable receives a source value from a source function, determining that a source statement writes, using the source variable, the source value to a column in a table, and obtaining, for a first sink statement, a first set of influenced variables influenced by the source variable. The method may further include obtaining, for a second sink statement, a second set of influenced variables influenced by the first set of influenced variables, and adding nodes to a trace graph. The method may further include determining that the first sink statement reads the source value into a sink variable including an identifier of the column, generating a modified set of influenced variables by adding the sink variable to the set of influenced variables, and reporting a defect at the first sink statement, and a defect trace using the trace graph.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.