Add a patch to fix CVE-2023-49083

[aadhar-agarwal]

Merge Checklist

All boxes should be checked before merging the PR (just tick any boxes which don't apply to this PR)

• The toolchain has been rebuilt successfully (or no changes were made to it)
• The toolchain/worker package manifests are up-to-date
• Any updated packages successfully build (or no packages were changed)
• Packages depending on static components modified in this PR (Golang, *-static subpackages, etc.) have had their Release tag incremented.
• Package tests (%check section) have been verified with RUN_CHECK=y for existing SPEC files, or added to new SPEC files
• All package sources are available
• cgmanifest files are up-to-date and sorted (./cgmanifest.json, ./toolkit/scripts/toolchain/cgmanifest.json, .github/workflows/cgmanifest.json)
• LICENSE-MAP files are up-to-date (./SPECS/LICENSES-AND-NOTICES/data/licenses.json, ./SPECS/LICENSES-AND-NOTICES/LICENSES-MAP.md, ./SPECS/LICENSES-AND-NOTICES/LICENSE-EXCEPTIONS.PHOTON)
• All source files have up-to-date hashes in the *.signatures.json files
• sudo make go-tidy-all and sudo make go-test-coverage pass
• Documentation has been updated to match any changes to the build system
• Ready to merge

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Summary

What does the PR accomplish, why was it needed?

• This PR adds a patch to fix CVE-2023-49083
• Calling load_pem_pkcs7_certificates or load_der_pkcs7_certificates could lead to a NULL-pointer dereference and segfault. Exploitation of this vulnerability poses a serious risk of Denial of Service (DoS) for any application attempting to deserialize a PKCS7 blob/certificate.

Change Log

• This is the upstream PR in pyca/cryptography that fixes the issue
• There was a comment (regarding raising an exception) that was addressed later on in this PR
• The patch has the changes from both of these PRs

Does this affect the toolchain?

NO

Associated issues

Links to CVEs

• https://nvd.nist.gov/vuln/detail/CVE-2023-49083

Test Methodology

• Buddy Build - Pass

• In the GitHub advisory, there is a reproducer for this issue. Used this reproducer to test the patch. Results are below.

• Using python3-cryptography-3.3.2-5, we see the seg fault:
  

• Using the updated python3-cryptography-3.3.2-6, we see the ValueError exception being thrown:
  

[mfrw]

LGTM

[PawelWMS]

Closing. It looks like this has been now patched with #7135.