What is taint in security?

Taint analysis is a process used in information security to identify the flow of user input through a system to understand the security implications of the system design.

What is static taint analysis?

Taint analysis is an analysis that detects any injection vulnerability pattern in source code. The analysis identifies the information flow of untrustworthy input that affects the sensitive sink or part of the system. A static taint analysis uses a parser to traverse abstract syntax trees of the source code.

What is dynamic taint analysis?

Dynamic taint analysis is a powerful technique for tracking the flow of sensitive information. Different approaches have been proposed to accelerate this process in an online or offline manner. Unfortunately, most of these approaches still have performance bottlenecks and thus reduce analytical efficiency.

What is an example of taint?

Taint is defined as to make something decay or cause it to be impure. An example of to taint is for a terrorist to put a chemical in the public water supply. The definition of a taint is something that corrupts or makes something undesirable. An example of a taint is a criminal charge on someones permanent record.

What is a taint source?

Taint sources are locations in the program where data is being read from a potentially risky source, and include things like environment variables, data, files, file metadata (such as a file’s permissions or data stamps), the network or information bus, the system clock, or network services (such as the results of a …

What is tainted flow?

If the user can read sensitive information from the program, we say that the program has an information disclosure vulnerability. • If the user can send harmful information to the program, we say that the program has a tainted flow vulnerability.

Can taint analysis be implemented as a \dynamic analysis?

Dynamic taint analysis runs a program and observes which computations are affected by predefined taint sources such as user input. For example, dynamic taint analysis can be used to prevent code injection attacks by monitoring whether user input is executed [22–24, 49, 58].

What does taint mean in history?

1 : to contaminate morally : corrupt scholarship tainted by envy. 2 : to affect with putrefaction : spoil.

What is the scientific name for a taint?

In human anatomy, the perineum, also called the “taint”, “grundel” or “gooch”, is generally defined as the surface region in both males and females between the pubic symphysis and the coccyx. The perineum corresponds to the outlet of the pelvis.

What is a taint value?

Only values, and not the operands or arguments, can be tainted; in some cases, the same operand or argument can hold tainted or untainted values along different paths. In this regard, taint is an attribute of a value that is assigned to any value originating from a tainted source.

What is taint propagation?

Dynamic taint propagation addresses these problems by allowing quality assurance engineers to find vulnerabilities by re-using their existing functional tests. The approach we describe introduces taint propagation logic as a program is loaded at runtime without changing the program’s source code or binary on disk.

Why do we have a taint?

The perineum protects the pelvic floor muscles and the blood vessels that supply the genitals and urinary tract. The perineum also protects the nerves used to urinate or have an erection. In males, the perineum is the area between the anus and the scrotum.