diff --git a/ai/security_report_2026-02-22_app.md b/ai/security_report_2026-02-22_app.md new file mode 100644 index 0000000..8793f7d --- /dev/null +++ b/ai/security_report_2026-02-22_app.md @@ -0,0 +1,79 @@ +==== + +Auto Security Analysis of app at 2026-02-22 +CRITICAL - Stored Cross-Site Scripting (XSS) +The application renders blog post content using the `|safe` filter in Jinja2 templates and the `markdown2` library without sanitization. This allows an attacker to inject malicious scripts into blog posts. When a user or admin views the compromised post, the script executes in their browser, potentially leading to session hijacking or other malicious actions. + +PoC +```python +import requests + +# Assuming the attacker has gained access or uses CSRF to post +# This payload will trigger an alert in the victim's browser +payload = { + 'title': 'Malicious Post', + 'author': 'Attacker', + 'tags': 'xss', + 'content': '' +} + +# In a real scenario, this would be sent via a CSRF attack or by an authenticated user +# requests.post(\'http://localhost:5000/create_post\', data=payload) +``` + +Fix +Use a sanitization library like `bleach` to clean the HTML generated by `markdown2` before passing it to the template, and remove the `|safe` filter or ensure only safe tags are allowed. + +==== + +==== + +Auto Security Analysis of app at 2026-02-22 +MEDIUM - Cross-Site Request Forgery (CSRF) +The application lacks CSRF protection on critical state-changing routes such as `/create_post`, `/upload`, and `/login`. An attacker can trick a logged-in administrator into visiting a malicious website that submits a hidden form to the blog, creating unauthorized posts or uploading files on behalf of the admin. + +PoC +```python +# HTML snippet for a CSRF attack to create a malicious post +# +#
+# +# +# +# +#
+# +``` + +Fix +Implement CSRF protection using a library like `Flask-WTF` or `Flask-SeaSurf`, which adds a unique token to each form and verifies it on the server side. + +==== + +==== + +Auto Security Analysis of app at 2026-02-22 +MEDIUM - Path Traversal +The `/post/` route uses the user-provided `name` parameter to construct a file path using `os.path.join` without sufficient validation. Although Flask's default routing limits the use of slashes, the logic itself is vulnerable and could allow reading arbitrary `.md` files on the system if the application is misconfigured or if a different routing mechanism is used. + +PoC +```python +import requests + +# Attempting to read the README.md file located in the root directory +# by traversing up from the articles directory. +# Note: This might be blocked by Flask's default routing if the parameter contains slashes. +target_url = "http://localhost:5000/post/../README" +# response = requests.get(target_url) +# print(response.text) +``` + +Fix +Validate that the requested file resides within the intended directory using `os.path.abspath` and checking the prefix, or use `werkzeug.utils.safe_join`. + +==== + +Summary: +- CRITICAL: Stored Cross-Site Scripting (XSS) +- MEDIUM: Cross-Site Request Forgery (CSRF) +- MEDIUM: Path Traversal