qtil

advanced-security/qtil-javascript 0.0.3

Module TaintTracking

Provides classes for modeling taint propagation.

Import path

import semmle.javascript.dataflow.TaintTracking

Imports

Public taint step relations.

Predicates

isNumberGuard	Holds if `guard` is a test that checks if `operand` is a number.
isStringTypeGuard	A test for the value of `typeof x`, restricting the potential types of `x`.
isTypeofGuard	Holds if `test` is a guard that checks if `operand` is typeof `tag`.
isUrlSearchParams	Holds if `params` is a construction of a `URLSearchParams` that parses the parameters in `input`.
sharedTaintStep	Holds if `pred -> succ` is an edge used by all taint-tracking configurations.

Classes

AdHocWhitelistCheckSanitizer	A check of the form `if(<isWhitelisted>(x))`, which sanitizes `x` in its “then” branch.
AdditionalSanitizerGuardNode	A `SanitizerGuardNode` that controls which taint tracking configurations it is used in.
Configuration	A data flow tracking configuration that considers taint propagation through objects, arrays, promises and strings in addition to standard data flow.
ErrorConstructorTaintStep	A taint step through an exception constructor, such as `x` to `new Error(x)`.
InSanitizer	A check of the form `if(x in o)`, which sanitizes `x` in its “then” branch.
IsEmptyGuard	A test of form `x.length === "0"`, preventing `x` from being tainted.
LabeledSanitizerGuardNode	A sanitizer guard node that only blocks specific flow labels.
MembershipTestSanitizer	A check of the form `whitelist.includes(x)` or equivalent, which sanitizes `x` in its “then” branch.
PositiveIndexOfSanitizer	A check of form `x.indexOf(y) > 0` or similar, which sanitizes `y` in the “then” branch.
SanitizerGuardNode	A node that can act as a sanitizer when appearing in a condition.
SanitizingRegExpTest	A conditional checking a tainted string against a regular expression, which is considered to be a sanitizer for all configurations.
SharedTaintStep	A taint-propagating data flow edge that should be added to all taint tracking configurations in addition to standard data flow edges.
StringConcatenationTaintStep	A taint propagating data flow edge arising from string concatenations.
TypeOfUndefinedSanitizer	A check of the form `type x === "undefined"`, which sanitized `x` in its “then” branch.
UndefinedCheckSanitizer	A check of the form `if(o[x] != undefined)`, which sanitizes `x` in its “then” branch.
UtilInspectTaintStep	A taint step through the Node.JS function `util.inspect(..)`.
WhitelistContainmentCallSanitizer	A check of the form `if(o.<contains>(x))`, which sanitizes `x` in its “then” branch.