While triaging your project, our bug-fixing tool generated the following message(s)-
In file: InterfaceChannelResource.py, method: alterar_interface, a logical expression uses the identity operator. A new object is created inside the identity check operation and then used for matching identity. Since this is a distinct, new object, it will not match with anything else. As a result, the identity check will have a logical short circuit and the program may have unintended behavior. iCR suggested that the logical operation should be reviewed for correctness.
In python, the is operator checks for identity, not equality. This means that the is operator checks whether the two operands refer to the same object or not. In this case, the cont is a list and [] is an empty list. However, the [] is a new object and is not the same as cont. Therefore, the is operator will return False and the if condition will be evaluated to False. However, it should have returned true in this case. We can test this scenerio by running the following code in python:
a = []
print(a is []) # This will print False
print(a == []) # This will print True
Changes
To ensure logical correctness, in the lines 57 and 167 the is operator is replaced with == operator.
Suggestions related to these changes are welcomed.
CLA Requirements
This section is only relevant if your project requires contributors to sign a Contributor License Agreement (CLA) for external contributions.
All contributed commits are already automatically signed off.
The meaning of a signoff depends on the project, but it typically certifies that committer has the rights to submit this work under the same license and agrees to a Developer Certificate of Origin (see https://developercertificate.org/ for more information).
This work is done by the security researchers from OpenRefactory and is supported by the Open Source Security Foundation (OpenSSF): Project Alpha-Omega. Alpha-Omega is a project partnering with open source software project maintainers to systematically find new, as-yet-undiscovered vulnerabilities in open source code - and get them fixed – to improve global software supply chain security.
The bug is found by running the Intelligent Code Repair (iCR) tool by OpenRefactory and then manually triaging the results.
Details
While triaging your project, our bug-fixing tool generated the following message(s)-
In this specific case, the lines 57 and 167 of the file InterfaceChannelResource.py is as follows:
In python, the
is
operator checks for identity, not equality. This means that theis
operator checks whether the two operands refer to the same object or not. In this case, thecont
is a list and[]
is an empty list. However, the[]
is a new object and is not the same ascont
. Therefore, theis
operator will returnFalse
and theif
condition will be evaluated toFalse
. However, it should have returned true in this case. We can test this scenerio by running the following code in python:Changes
is
operator is replaced with==
operator.Suggestions related to these changes are welcomed.
CLA Requirements
This section is only relevant if your project requires contributors to sign a Contributor License Agreement (CLA) for external contributions.
All contributed commits are already automatically signed off.
The meaning of a signoff depends on the project, but it typically certifies that committer has the rights to submit this work under the same license and agrees to a Developer Certificate of Origin (see https://developercertificate.org/ for more information).
Git Commit SignOff documentation
Sponsorship and Support
This work is done by the security researchers from OpenRefactory and is supported by the Open Source Security Foundation (OpenSSF): Project Alpha-Omega. Alpha-Omega is a project partnering with open source software project maintainers to systematically find new, as-yet-undiscovered vulnerabilities in open source code - and get them fixed – to improve global software supply chain security.
The bug is found by running the Intelligent Code Repair (iCR) tool by OpenRefactory and then manually triaging the results.