pyca / pyca/pyopenssl

Crypto fail on SCT retrieval

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#270 6 comments 0 reactions 0 assignees View on GitHub

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bug
Dominant language
Python
Stars
944
Forks
440
Avg merge
1d 6h
Merged PRs (30d)
6

Description

When executing this code (http://hastebin.com/arinusefex.py) on "twitter.com" (which only displays basic informations and X509 extensions of the certificate), it raises an exception on the last extension, which oid is : 1.3.6.1.4.1.11129.2.4.2.

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reviewing the linked hastebin reproducer and running it against twitter.com to capture the exception for extension OID 1.3.6.1.4.1.11129.2.4.2. Trace the certificate-extension handling reached by that reproducer; done means the SCT extension no longer raises an exception while the other certificate information remains available.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
security
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
30/100

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