feat: enhance URL validation for OWASP compliance checks to prevent S… #3679
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CI Feedback 🧐(Feedback updated until commit efce273)A test triggered by this PR failed. Here is an AI-generated analysis of the failure:
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WalkthroughThe changes introduce formatting improvements and detailed inline comments in the JavaScript within Changes
Sequence Diagram(s)sequenceDiagram
participant U as User
participant S as Server
participant V as CompliantCheck
U->>S: Submit URL for compliance check
S->>V: Invoke check_owasp_compliance(url)
V->>V: Validate URL scheme (http/https)
V->>V: Append "https://" if missing
V->>V: Parse URL and extract hostname
V->>V: Check hostname validity and perform IP-based SSRF protection
alt Validation Successful
V->>S: Construct safe URL and fetch resource
else Validation Fails
V->>S: Raise a ValidationError with a specific message
end
S->>U: Return compliance result or error message
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Actionable comments posted: 0
🧹 Nitpick comments (3)
website/views/core.py (3)
1549-1551: Force prepend 'https://' if scheme is missing.Enforcing HTTPS is a solid security measure. However, consider whether you want to:
- Warn the user if they explicitly typed
http://.- Reject non-HTTPS URLs instead of silently switching them to HTTPS.
Otherwise, this appears consistent with the OWASP compliance objective.
1572-1573: Omitting query and fragment.Constructing a “safe” URL excluding query parameters and fragments aligns with restricting potential SSRF vectors. If query parameters are required in the future, consider carefully handling them or applying whitelists.
1644-1649: Unified exception messages.You uniformly return "Invalid or inaccessible URL provided" for
ValidationError,socket.gaierror, andValueError. While this is acceptable, consider providing distinct messages for more granular user feedback—especially for SSRF rejections.
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📒 Files selected for processing (2)
website/templates/base.html(3 hunks)website/views/core.py(4 hunks)
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🔇 Additional comments (11)
website/templates/base.html (4)
291-291: No functional changes.This line change simply adds whitespace for readability.
323-323: No functional changes.This line change simply adds whitespace for readability.
331-331: No functional changes.This line change simply adds whitespace for readability.
352-352: No functional changes.This line change simply adds whitespace for readability.
website/views/core.py (7)
1-7: Imports for SSRF checks.Adding
ipaddressandsocketis appropriate for implementing SSRF validation. No concerns here.
32-32: Importing ValidationError.Bringing
ValidationErrorinto scope is consistent with the new validation logic below.
1547-1547: Contextual comment.This comment clarifies the upcoming validation logic. No issues.
1552-1554: Validate parsed hostname.Raising a
ValidationErrorif no hostname is present is a straightforward way to handle improperly formatted URLs.
1558-1571: SSRF protection through IP checks.This block effectively rejects domains that resolve to private or special-use IP addresses. Note that if a domain resolves to multiple addresses, any private address will block it. This is typically desired for SSRF mitigation. Implementation looks correct.
1576-1581: GitHub and OWASP checks.This conditional logic is clear. Checking for “/owasp” in the path is a reasonable shortcut to distinguish OWASP projects.
1584-1584: Secure request with timeout and SSL verification.Specifying
verify=Trueand a 10-second timeout is a good practice to avoid hanging connections or ignoring certificate issues.
gojo-satorou-v7
suggested changes
Mar 15, 2025
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Instead of validating the url here too for SSRF we can use rebuild_safe_url from utils.py and then implement the logic later.
Also according to me this should be a high priority issue, I had also flagged this problem earlier.
@CodeRabbit check if my above solution is efficient/implementable or not also check if this PR should be in high priority in #3942 or not.
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…SRF and improve security
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