Class Configuration

A taint-tracking configuration for reasoning about second order command-injection vulnerabilities.

Import path

import semmle.javascript.security.dataflow.SecondOrderCommandInjectionQuery

Direct supertypes

Configuration

Indirect supertypes

Predicates

isAdditionalFlowStep	Holds if `src -> trg` is a flow edge converting flow with label `inlbl` to flow with label `outlbl`.
isSanitizer	Holds if the intermediate node `node` is a taint sanitizer, that is, tainted values can not flow into or out of `node`.
isSanitizerGuard	Holds if data flow node `guard` can act as a sanitizer when appearing in a condition.
isSink	Holds if `sink` is a sink of flow labeled with `lbl` that is relevant for this configuration.
isSource	Holds if `source` is a source of flow labeled with `lbl` that is relevant for this configuration.

Inherited predicates

charAt	Returns a one-character string containing the character in the receiver at the given index (which ranges from 0 through length minus one)	from string
codePointAt	Returns an integer for the Unicode code point value of the character starting at the given index, counted by UTF-16 code units.	from string
codePointCount	Returns the number of Unicode code points found in the receiver between the given start index (inclusive) and end index (exclusive).	from string
getDefaultSourceLabel	Gets the flow label to associate with sources added by the 1-argument `isSource` predicate.	from Configuration
getId	Gets the unique identifier of this configuration among all data flow tracking configurations.	from Configuration
hasFlow	Holds if data may flow from `source` to `sink` for this configuration.	from Configuration
hasFlowPath	Holds if data may flow from `source` to `sink` for this configuration.	from Configuration
indexOf	Returns all the offsets (starting at 0) at which the given string occurs in the receiver. Has no result if the string does not occur in the receiver.	from string
indexOf	Returns the index of the n’th (starting at 0) occurrence of the given string within the receiver, starting at the given 0-based offset. Has no result if the string does not occur in the receiver.	from string
isAdditionalFlowStep	Holds if `src -> trg` should be considered as a flow edge in addition to standard data flow edges.	from Configuration
isAdditionalFlowStep	INTERNAL: This predicate should not normally be used outside the data flow library.	from Configuration
isAdditionalLoadStep	EXPERIMENTAL. This API may change in the future.	from Configuration
isAdditionalLoadStoreStep	EXPERIMENTAL. This API may change in the future.	from Configuration
isAdditionalLoadStoreStep	EXPERIMENTAL. This API may change in the future.	from Configuration
isAdditionalStoreStep	EXPERIMENTAL. This API may change in the future.	from Configuration
isAdditionalTaintStep	Holds if the additional taint propagation step from `pred` to `succ` must be taken into account in the analysis.	from Configuration
isBarrier	Holds if the intermediate flow node `node` is prohibited.	from Configuration
isBarrierEdge	Holds if flow from `pred` to `succ` is prohibited.	from Configuration
isBarrierEdge	Holds if flow with label `lbl` cannot flow from `pred` to `succ`.	from Configuration
isBarrierGuard	Holds if data flow node `guard` can act as a barrier when appearing in a condition.	from Configuration
isBarrierIn	Holds if flow into `node` is prohibited.	from Configuration
isBarrierIn	Holds if flow into `node` is prohibited for the flow label `lbl`.	from Configuration
isBarrierOut	Holds if flow out `node` is prohibited.	from Configuration
isBarrierOut	Holds if flow out `node` is prohibited for the flow label `lbl`.	from Configuration
isLabeledBarrier	Holds if flow with label `lbl` cannot flow into `node`.	from Configuration
isLowercase	Holds when the receiver contains no upper-case letters. This includes the case where the receiver contains no letters at all, for example, if it’s an empty string or only consists of non-letter symbols.	from string
isSanitizerEdge	Holds if the edge from `pred` to `succ` is a taint sanitizer.	from Configuration
isSanitizerEdge	Holds if the edge from `pred` to `succ` is a taint sanitizer for data labelled with `lbl`.	from Configuration
isSanitizerIn	Holds if flow into `node` is prohibited.	from Configuration
isSanitizerIn	Holds if flow into `node` is prohibited for the flow label `lbl`.	from Configuration
isSanitizerOut	Holds if flow out `node` is prohibited.	from Configuration
isSanitizerOut	Holds if flow out `node` is prohibited for the flow label `lbl`.	from Configuration
isSink	Holds if `sink` is a relevant taint sink.	from Configuration
isSource	Holds if `source` is a relevant taint source.	from Configuration
isUppercase	Holds when the receiver contains no lower-case letters. This includes the case where the receiver contains no letters at all, for example, if it’s an empty string or only consists of non-letter symbols.	from string
length	Returns the length of the receiver (in UTF-16 code units)	from string
matches	Holds when the receiver matches the pattern. Patterns are matched by case sensitive string matching, and there are two wildcards: _ matches a single character, and % matches any sequence of characters. To match the actual characters _ or % in the pattern, they must be escaped using backslashes. For example, `"anythingstring%".matches("%string\\%")` holds. To match a literal backslash in front of _ or %, you must escape the backslash. Backslashes that are not part of an escape sequence are matched as literals.	from string
prefix	Returns the substring of the receiver ending at the given 0-based exclusive offset	from string
regexpCapture	When the given regular expression matches the entire receiver, returns the substring matched by the given capture group (starting at 1). The regex format used is Java’s Pattern.	from string
regexpFind	Returns a substring of the receiver which matches the given regular expression. Also returns the offset within the receiver (starting at 0) at which the match occurred (occurrenceOffset), and the number of matches which occur at smaller offsets (occurrenceIndex). The regex format used is Java’s Pattern.	from string
regexpMatch	Holds when the given regular expression matches the entire receiver. The regex format used is Java’s Pattern.	from string
regexpReplaceAll	Returns a copy of the receiver with every substring which matches the given regular expression is replaced by the replacement. The regex format used is Java’s Pattern. The replacement string can contain references to captured groups as described in Java’s appendReplacement docs.	from string
replaceAll	Returns a copy of the receiver with all occurrences of the target replaced by the replacement	from string
splitAt	Returns all the substrings obtained by splitting the receiver at every occurrence of the argument. Trailing empty substrings are omitted. Splitting at an empty string returns all the characters that the receiver consists of.	from string
splitAt	Returns the n’th (starting at 0) substring obtained by splitting the receiver at every occurrence of the argument. Trailing empty substrings are omitted. Splitting at an empty string returns all the characters that the receiver consists of.	from string
substring	Returns the substring of the receiver which starts and ends at the given indices. Both indices are 0-based. The start index is inclusive and the end index is exclusive.	from string
suffix	Returns the substring of the receiver starting at the given 0-based inclusive offset	from string
toBigInt	Returns the arbitrary-precision signed integer, if any, obtained by parsing the receiver. The number may consist of an optional leading `+` or `-`, followed by one or more digits.	from string
toDate	Returns the date, if any, obtained by parsing the receiver. The recognized formats are described in the documentation.	from string
toFloat	Returns the 64-bit floating point number, if any, obtained by parsing the receiver. The parsing rules are described in Java’s valueOf docs.	from string
toInt	Returns the 32-bit signed integer, if any, obtained by parsing the receiver. The number may consist of an optional leading `+` or `-`, followed by one or more digits. Has no result if the value exceeds the value range supported by the `int` type.	from string
toLowerCase	Returns a copy of the receiver with all uppercase characters replaced by lowercase ones according to Unicode case conversion rules.	from string
toString	Returns the receiver	from string
toUpperCase	Returns a copy of the receiver with all lowercase characters replaced by uppercase ones according to Unicode case conversion rules.	from string
trim	Returns a copy of the receiver with all whitespace removed from the beginning and end of the string (where whitespace is defined as Unicode code points ‘\u0000’ through ‘\u0020’ inclusive)	from string

Charpred

Configuration