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codeql/python/ql/lib/semmle/python/frameworks/Ldap3.qll
2022-09-09 10:34:14 +02:00

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/**
* Provides classes modeling security-relevant aspects of the `ldap3` PyPI package
* See https://pypi.org/project/ldap3/
*/
private import python
private import semmle.python.dataflow.new.DataFlow
private import semmle.python.Concepts
private import semmle.python.ApiGraphs
/**
* Provides models for the `ldap3` PyPI package
*
* See https://pypi.org/project/ldap3/
*/
private module Ldap3 {
/** The execution of an `ldap` query. */
private class LdapQueryExecution extends DataFlow::CallCfgNode, Ldap::LdapExecution::Range {
LdapQueryExecution() {
this =
API::moduleImport("ldap3")
.getMember("Connection")
.getReturn()
.getMember("search")
.getACall()
}
override DataFlow::Node getFilter() {
result in [this.getArg(1), this.getArgByName("search_filter")]
}
override DataFlow::Node getBaseDn() {
result in [this.getArg(0), this.getArgByName("search_base")]
}
}
/**
* A call to `ldap3.utils.dn.escape_rdn`.
*
* See https://github.com/cannatag/ldap3/blob/4d33166f0869b929f59c6e6825a1b9505eb99967/ldap3/utils/dn.py#L390
*/
private class LdapEscapeDnCall extends DataFlow::CallCfgNode, Escaping::Range {
LdapEscapeDnCall() {
this =
API::moduleImport("ldap3")
.getMember("utils")
.getMember("dn")
.getMember("escape_rdn")
.getACall()
}
override DataFlow::Node getAnInput() { result in [this.getArg(0), this.getArgByName("rdn")] }
override DataFlow::Node getOutput() { result = this }
override string getKind() { result = Escaping::getLdapDnKind() }
}
/**
* A call to `ldap3.utils.conv.escape_filter_chars`.
*
* See https://github.com/cannatag/ldap3/blob/4d33166f0869b929f59c6e6825a1b9505eb99967/ldap3/utils/conv.py#L91
*/
private class LdapEscapeFilterCall extends DataFlow::CallCfgNode, Escaping::Range {
LdapEscapeFilterCall() {
this =
API::moduleImport("ldap3")
.getMember("utils")
.getMember("conv")
.getMember("escape_filter_chars")
.getACall()
}
override DataFlow::Node getAnInput() { result in [this.getArg(0), this.getArgByName("text")] }
override DataFlow::Node getOutput() { result = this }
override string getKind() { result = Escaping::getLdapFilterKind() }
}
}