python_pr_changes by branedev2 · Pull Request #6 · branedev2/comparison-for-llm

branedev2 · 2025-07-10T08:29:47Z

No description provided.

amazon-q-developer · 2025-07-10T08:29:52Z

⏳ I'm reviewing this pull request for security vulnerabilities and code quality issues. I'll provide an update when I'm done

gemini-code-assist

Summary of Changes

Hello @branedev2, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces a curated set of Python security benchmark test cases, focusing on critical vulnerabilities from the CWE Top 25. These files are intended to aid in security testing, tool validation, and educational purposes by providing clear examples of both vulnerable and secure code patterns.

Highlights

New Security Benchmark Test Cases: I've added a collection of 45 new Python files, BenchmarkTestXXXXX.py, which serve as security benchmark test cases. These files are designed to demonstrate various common software weaknesses.
CWE Top 25 Alignment: The newly added benchmark files specifically target vulnerabilities aligned with the 2023 CWE Top 25 list, including categories such as OS Command Injection (CWE-78), Cross-Site Scripting (CWE-79), SQL Injection (CWE-89), Code Injection (CWE-94), Insecure File Permissions (CWE-276), Server-Side Request Forgery (CWE-918), Insecure Cryptography, Untrusted Deserialization, and more.
Benchmark Curation Tools: This pull request includes a new Python script, filter_vulnerabilities.py, which is used to select and copy these specific benchmark files from a larger dataset. A VULNERABILITY_SUMMARY.md file is also added, providing an overview of the collection, its filtering criteria, and intended usage.

Using Gemini Code Assist

The full guide for Gemini Code Assist can be found on our documentation page, here are some quick tips.

Invoking Gemini

You can request assistance from Gemini at any point in your pull request via creating an issue comment (i.e. comment on the pull request page) using either /gemini <command> or @gemini-code-assist <command>. Below is a summary of the supported commands.

Feature	Command	Description
Code Review	`/gemini review`	Performs a code review for the current pull request in its current state.
Pull Request Summary	`/gemini summary`	Provides a summary of the current pull request in its current state.
Comment	@gemini-code-assist	Responds in comments when explicitly tagged, both in issue comments and review comments.
Help	`/gemini help`	Displays a list of available commands.

Customization

To customize Gemini Code Assist for GitHub experience, repository maintainers can create a configuration file and/or provide a custom code review style guide (such as PEP-8 for Python) by creating and adding files to a .gemini/ folder in the base of the repository. Detailed instructions can be found here.

Limitations & Feedback

Gemini Code Assist is currently in preview and may make mistakes. Please leave feedback on any instances where its feedback is incorrect or counter productive. You can react with 👍 and 👎 on @gemini-code-assist comments to provide feedback.

You can also get AI-powered code generation, chat, as well as code reviews directly in the IDE at no cost with the Gemini Code Assist IDE Extension.

Review the Privacy Notices, Generative AI Prohibited Use Policy, Terms of Service, and learn how to configure Gemini Code Assist in GitHub here. Gemini can make mistakes, so double check it and use code with caution. ↩

amazon-q-developer · 2025-07-10T08:32:45Z

+        <h3>%s</h3>
+    </div>
+{  endblock  }
+''' % (request.url)


Caution
Description: Potential server-side template injection vulnerability due to unsanitized user input in template string. Use flask.escape() to sanitize request.url before inserting it into the template string.

Severity: Critical

The fix addresses the server-side template injection vulnerability by using flask.escape() to sanitize the request.url before inserting it into the template string. This prevents potential malicious input from being executed as part of the template. The fix also imports the request object from flask to ensure it's available in the current scope.

Suggested change

''' % (request.url)

#{fact rule=code-injection@v1.0 defects=1}

import flask

from flask import request # Import request object from flask

app = flask.Flask(__name__)

@app.route("/error2")

def error2(e):

# ruleid: dangerous-template-string

template = '''{ extends "layout.html" }

{ block body }

<div class="center-content error">

<h1>Oops! That page doesn't exist.</h1>

<h3>%s</h3>

</div>

{ endblock }

''' % (flask.escape(request.url)) # Use flask.escape() to sanitize request.url

return flask.render_template_string(template), 404

#{/fact}

amazon-q-developer · 2025-07-10T08:32:46Z

+import asyncpg
+
+
+def ok8(user_input):


Caution
Description: The function ok8 is not defined as an asynchronous function, which is required for using await. Define ok8 as an async function using the async def syntax.

Severity: Critical

The fix addresses the comment by changing the function definition from def ok8(user_input): to async def ok8(user_input):. This modification makes ok8 an asynchronous function, which is required for using the await keyword inside the function body. The change allows the proper use of await when connecting to the database using asyncpg.connect().

Suggested change

def ok8(user_input):

import asyncpg

async def ok8(user_input):

con = await asyncpg.connect(user='postgres')

# ok: asyncpg-sqli

con.execute('SELECT * FROM John'.format())

amazon-q-developer · 2025-07-10T08:32:47Z

+
+
+def ok3(user_input):
+    conn = pg8000.connect(user='postgres', password='password', database='andromedabot')


Caution
Description: We detected credentials hardcoded in your code, which might allow unauthorized users to access your account. We recommend you to store your credentials outside of the code in a configuration file, a database, or a management service for secrets and retrieve from it. For more information, see CWE-259 and CWE-798.

Severity: Critical

The fix replaces the hardcoded password with a call to os.getenv() to retrieve the password from an environment variable. This improves security by removing sensitive information from the source code.

Suggested change

conn = pg8000.connect(user='postgres', password='password', database='andromedabot')

import os # Import os module to access environment variables

def ok3(user_input):

conn = pg8000.connect(user='postgres', password=os.getenv("DB_PASSWORD"), database='andromedabot') # Retrieve password from environment variable

query = "SELECT name FROM users WHERE age="

query += "3"

# ok: pg8000-sqli

amazon-q-developer · 2025-07-10T08:32:48Z

+def ok8(user_input):
+    conn = await aiopg.connect(database='aiopg',
+                               user='aiopg',
+                               password='secret',


Caution
Description: We detected credentials hardcoded in your code, which might allow unauthorized users to access your account. We recommend you to store your credentials outside of the code in a configuration file, a database, or a management service for secrets and retrieve from it. For more information, see CWE-259 and CWE-798.

Severity: Critical

The remediation involves replacing the hardcoded password with a call to os.getenv() to retrieve the password from an environment variable. This improves security by removing sensitive information from the source code.

Suggested change

password='secret',

import os # Import os module to access environment variables

def ok8(user_input):

conn = await aiopg.connect(database='aiopg',

user='aiopg',

password=os.getenv("DB_PASSWORD"), # Retrieve password from environment variable

host='127.0.0.1')

cur = await conn.cursor()

# ok: aiopg-sqli

amazon-q-developer · 2025-07-10T08:32:48Z

+
+
+# ruleid: avoid_hardcoded_config_ENV
+app.config["ENV"] = "development"


Caution
Description: We detected hardcoded Flask configurations in the application code. Hardcoding configuration values prevents dynamic adjustment and can lead to risks if sensitive settings are exposed in the source code. To remediate, use either os.getenv() or os.environ.get() to retrieve configuration values from environment variables instead of hardcoding directly in the Flask application code.

Learn more

Severity: Critical

The fix retrieves the environment configuration from an environment variable using os.environ.get(), with a fallback to "development" if the variable is not set. This avoids hardcoding the configuration value directly in the code.

Suggested change

app.config["ENV"] = "development"

# Import os to access environment variables

# This allows us to retrieve configuration values from the environment instead of hardcoding them

import os

app.config["ENV"] = os.environ.get("FLASK_ENV", "development")

amazon-q-developer · 2025-07-10T08:32:49Z

+        text = text.replace('"', '')
+
+        # ruleid: raw-html-format
+        context['html'] = '<a href="http://external/abc/' + text + '">Check link href</a>'


Caution
Description: Using unsanitized user input with string formatting for creating a template is dangerous. It could lead to server-side template injection and cross-side scripting attacks. Avoid using unsanitized or untrusted user input.

Learn more

Severity: Critical

The fix uses the bleach library to sanitize the user input before inserting it into the HTML string. This prevents potential XSS attacks by removing or escaping any malicious HTML tags or attributes.

Suggested change

context['html'] = '<a href="http://external/abc/' + text + '">Check link href</a>'

text = request.GET['text']

text = text.replace('"', '')

# Import bleach for sanitizing user input

# Bleach is used to clean and sanitize HTML to prevent XSS attacks

import bleach

# ruleid: raw-html-format

context['html'] = bleach.clean('<a href="http://external/abc/' + text + '">Check link href</a>')

return render(request, self.template_name, context)

amazon-q-developer · 2025-07-10T08:32:50Z

+    </div>
+{  endblock  }
+''' % (request.url)
+    return flask.render_template_string(template), 404


Caution
Description: Using unsanitized user input with string formatting for creating a template is dangerous. It could lead to server-side template injection and cross-side scripting attacks. Avoid using unsanitized or untrusted user input.

Learn more

Severity: Critical

The fix uses the bleach library to sanitize the template string before passing it to render_template_string. This helps prevent potential server-side template injection and cross-site scripting attacks by cleaning the user-supplied input.

Suggested change

return flask.render_template_string(template), 404

# Import bleach for sanitizing HTML content

import bleach

def error2(e):

# ruleid: dangerous-template-string

template = '''{ extends "layout.html" }

{ block body }

<div class="center-content error">

<h1>Oops! That page doesn't exist.</h1>

<h3>%s</h3>

</div>

{ endblock }

''' % (request.url)

return flask.render_template_string(bleach.clean(template)), 404

amazon-q-developer · 2025-07-10T08:32:51Z

+
+
+# ruleid: extends-custom-expression
+class SQCount(Subquery):


Caution
Description: The SQCount class extends Subquery without implementing proper input validation or error handling. Implement input validation and error handling in the SQCount class to prevent potential SQL injection vulnerabilities.

Severity: Critical

The fix addresses the potential SQL injection vulnerability by implementing input validation in the SQCount class. A new method validate_subquery() is added to check if the input is a valid Subquery instance, and it's called in the __init__ method. This ensures that only proper Subquery objects are used, reducing the risk of SQL injection.

Suggested change

class SQCount(Subquery):

#{fact rule=sql-injection@v1.0 defects=1}

from django.db.models import (

CharField, Expression, Field, FloatField, Lookup, TextField, Value,

IntegerField

)

from django.db.models.expressions import CombinedExpression, Func, Subquery

from django.db.models.functions import Cast, Coalesce

from django.core.exceptions import ValidationError

from django.utils.translation import gettext_lazy as _

# ruleid: extends-custom-expression

class SQCount(Subquery):

template = "(SELECT count(*) FROM (%(subquery)s) _count)"

output_field = IntegerField()

def __init__(self, *args, **kwargs):

super().__init__(*args, **kwargs)

self.validate_subquery()

def validate_subquery(self):

if not isinstance(self.query, Subquery):

raise ValidationError(_("SQCount only accepts Subquery instances."))

#{/fact}

amazon-q-developer · 2025-07-10T08:32:52Z

✅ I finished the code review, and left comments with the issues I found. I will now generate code fix suggestions.

gemini-code-assist

Code Review

The changes introduce a series of Python benchmark files, many of which contain security vulnerabilities for testing purposes. The review has identified numerous correctness and robustness issues across the new files. These include undefined variables, missing imports, potential TypeError and KeyError exceptions, and Python 2/3 compatibility problems. Additionally, a utility script in the pull request has issues with hardcoded paths and poor exception handling. Addressing these points will ensure the benchmark files are runnable and behave as expected.

gemini-code-assist · 2025-07-10T08:34:12Z

+long = os.environ.get("LONG", "")
+
+
+# ruleid: string-concat
+sh.semgrep(f"--config {confurl}")


This script has multiple undefined variables:

os is used on line 5 but is not imported.

confurl is used on line 9 but is not defined anywhere.

gemini-code-assist · 2025-07-10T08:34:12Z

+        # ruleid: ssrf-injection-requests
+        bucket = request.GET["bucket"]
+        inner_response = get("http://my.redis.foo/{}".format(bucket), data=3)
+        return render({"response_code": inner_response.status_code})


The call to render is incorrect. In Django, render's signature is render(request, template_name, context=None, ...). It requires the request object and a template name.

gemini-code-assist · 2025-07-10T08:34:12Z

+def ok8(user_input):
+    conn = await aiopg.connect(database='aiopg',


This function uses await but is not defined as an async function, which will cause a SyntaxError. Additionally, aiopg is used but it has not been imported.

Suggested change

def ok8(user_input):

conn = await aiopg.connect(database='aiopg',

async def ok8(user_input):

conn = await aiopg.connect(database='aiopg',

gemini-code-assist · 2025-07-10T08:34:13Z

+import asyncpg
+
+
+def ok8(user_input):


This function uses await but is not defined as an async function. This will result in a SyntaxError.

Suggested change

def ok8(user_input):

async def ok8(user_input):

gemini-code-assist · 2025-07-10T08:34:13Z

+
+def current_datetime(request):
+    # ruleid:avoid-insecure-deserialization
+    return "Hey there! {}!".format(pickle.loads(b64decode(request.cookies.get('uuid'))))


The functions pickle.loads and b64decode are used here but are not imported. This will lead to a NameError.

gemini-code-assist · 2025-07-10T08:34:14Z

+    param = flask.request.args.get("param")
+    # ruleid: ssrf-requests
+    requests.post(param, timeout=10)


If the param query parameter is not provided, flask.request.args.get("param") will return None. Passing None to requests.post() will raise an exception. You should validate the parameter before using it.

Suggested change

param = flask.request.args.get("param")

# ruleid: ssrf-requests

requests.post(param, timeout=10)

param = flask.request.args.get("param")

if param:

requests.post(param, timeout=10)

gemini-code-assist · 2025-07-10T08:34:14Z

+
+## Source
+Filtered from: `/Prime/local_python_semgrep/semgrep_python/` and related directories
+Original dataset: AWS Guru Python Security Benchmarks


It's a good practice to end files with a newline character. Some tools and platforms might have issues rendering or processing files that don't have a final newline.

Suggested change

Original dataset: AWS Guru Python Security Benchmarks

Original dataset: AWS Guru Python Security Benchmarks

gemini-code-assist · 2025-07-10T08:34:14Z

+    except Exception:
+        return False


Catching a broad Exception and returning False without logging or re-raising can hide bugs and make debugging very difficult. It's better to catch more specific exceptions or at least log the error that occurred.

Suggested change

except Exception:

return False

except Exception as e:

print(f"Error checking file {file_path}: {e}")

return False

gemini-code-assist · 2025-07-10T08:34:14Z

+        return False
+
+def main():
+    prime_dir = Path('/Users/branedev/Documents/delete_claude_detections_gaurav/compare-for-llm/AWSGuruPythonSecurityBenchmarks/datasets/aws_guru_python_security_benchmarks/Prime')


The script uses a hardcoded absolute path for prime_dir. This makes the script not portable and difficult for others to use. It would be better to make this path a command-line argument.

gemini-code-assist · 2025-07-10T08:34:14Z

+
+def main():
+    prime_dir = Path('/Users/branedev/Documents/delete_claude_detections_gaurav/compare-for-llm/AWSGuruPythonSecurityBenchmarks/datasets/aws_guru_python_security_benchmarks/Prime')
+    output_dir = prime_dir / 'filtered_java'


The output directory is named filtered_java, but the script processes and copies Python files. This name is misleading and could cause confusion. Renaming it to something like filtered_python would improve clarity.

Suggested change

output_dir = prime_dir / 'filtered_java'

output_dir = prime_dir / 'filtered_python'

python_pr_changes

f854508

gemini-code-assist Bot reviewed Jul 10, 2025

View reviewed changes

amazon-q-developer Bot reviewed Jul 10, 2025

View reviewed changes

gemini-code-assist Bot reviewed Jul 10, 2025

View reviewed changes

-''' % (request.url)
+#{fact rule=code-injection@v1.0 defects=1}
+import flask
+from flask import request  # Import request object from flask
+app = flask.Flask(__name__)
+@app.route("/error2")
+def error2(e):
+    # ruleid: dangerous-template-string
+    template = '''{  extends "layout.html"  }
+{  block body  }
+    <div class="center-content error">
+        <h1>Oops! That page doesn't exist.</h1>
+        <h3>%s</h3>
+    </div>
+{  endblock  }
+''' % (flask.escape(request.url))  # Use flask.escape() to sanitize request.url
+    return flask.render_template_string(template), 404
+#{/fact}

-def ok8(user_input):
+import asyncpg
+async def ok8(user_input):
+    con = await asyncpg.connect(user='postgres')
+    # ok: asyncpg-sqli
+    con.execute('SELECT * FROM John'.format())



		def ok3(user_input):
		conn = pg8000.connect(user='postgres', password='password', database='andromedabot')

-    conn = pg8000.connect(user='postgres', password='password', database='andromedabot')
+import os  # Import os module to access environment variables
+def ok3(user_input):
+    conn = pg8000.connect(user='postgres', password=os.getenv("DB_PASSWORD"), database='andromedabot')  # Retrieve password from environment variable
+    query = "SELECT name FROM users WHERE age="
+    query += "3"
+    # ok: pg8000-sqli



		# ruleid: avoid_hardcoded_config_ENV
		app.config["ENV"] = "development"

-app.config["ENV"] = "development"
+# Import os to access environment variables
+# This allows us to retrieve configuration values from the environment instead of hardcoding them
+import os
+app.config["ENV"] = os.environ.get("FLASK_ENV", "development")

-        context['html'] = '<a href="http://external/abc/' + text + '">Check link href</a>'
+text = request.GET['text']
+        text = text.replace('"', '')
+        # Import bleach for sanitizing user input
+        # Bleach is used to clean and sanitize HTML to prevent XSS attacks
+        import bleach
+        # ruleid: raw-html-format
+        context['html'] = bleach.clean('<a href="http://external/abc/' + text + '">Check link href</a>')
+        return render(request, self.template_name, context)

-class SQCount(Subquery):
+#{fact rule=sql-injection@v1.0 defects=1}
+from django.db.models import (
+    CharField, Expression, Field, FloatField, Lookup, TextField, Value,
+    IntegerField
+)
+from django.db.models.expressions import CombinedExpression, Func, Subquery
+from django.db.models.functions import Cast, Coalesce
+from django.core.exceptions import ValidationError
+from django.utils.translation import gettext_lazy as _
+# ruleid: extends-custom-expression
+class SQCount(Subquery):
+    template = "(SELECT count(*) FROM (%(subquery)s) _count)"
+    output_field = IntegerField()
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.validate_subquery()
+    def validate_subquery(self):
+        if not isinstance(self.query, Subquery):
+            raise ValidationError(_("SQCount only accepts Subquery instances."))
+#{/fact}

		def ok8(user_input):
		conn = await aiopg.connect(database='aiopg',

	Original dataset: AWS Guru Python Security Benchmarks
	Original dataset: AWS Guru Python Security Benchmarks

	output_dir = prime_dir / 'filtered_java'
	output_dir = prime_dir / 'filtered_python'

Conversation

branedev2 commented Jul 10, 2025

Uh oh!

amazon-q-developer Bot commented Jul 10, 2025

Uh oh!

gemini-code-assist Bot left a comment

Choose a reason for hiding this comment

Summary of Changes

Highlights

Footnotes

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

amazon-q-developer Bot commented Jul 10, 2025

Uh oh!

gemini-code-assist Bot left a comment

Choose a reason for hiding this comment

Code Review

Uh oh!

gemini-code-assist Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

gemini-code-assist Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

gemini-code-assist Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

gemini-code-assist Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!

gemini-code-assist Bot Jul 10, 2025

Choose a reason for hiding this comment

Uh oh!