Dependency Scanning vulnerability reports a lot of duplicate links

Summary

A vulnerability page is reporting the same links multiple times.

Steps to reproduce

• https://gitlab.com/gitlab-org/gitlab/-/security/vulnerabilities/8928476
• https://gitlab.com/gitlab-org/gitlab/-/security/vulnerabilities/8928475
• https://gitlab.com/gitlab-org/gitlab/-/security/vulnerabilities/8928477

Example Project

See above

What is the current bug behavior?

Long list of duplicate links

What is the expected correct behavior?

Just two links

Relevant logs and/or screenshots

Output of checks

This bug happens on GitLab.com

Results of GitLab environment info

Expand for output related to GitLab environment info

(For installations with omnibus-gitlab package run and paste the output of:
`sudo gitlab-rake gitlab:env:info`)

(For installations from source run and paste the output of:
`sudo -u git -H bundle exec rake gitlab:env:info RAILS_ENV=production`)

Results of GitLab application Check

Expand for output related to the GitLab application check

(For installations with omnibus-gitlab package run and paste the output of:
sudo gitlab-rake gitlab:check SANITIZE=true)
(For installations from source run and paste the output of:
sudo -u git -H bundle exec rake gitlab:check RAILS_ENV=production SANITIZE=true)
(we will only investigate if the tests are passing)

Implementation Plan

• backend Put feature flag to block pulling from FindingLinks model
• backend Use the feature flag to disable the service worker from creating new links
• database Wipe the finding_links table with a background migration )!70729 (closed))
• database Implement new unique indices. These will fix the call in StoreReportService to only update links instead of always adding new links (!67993 (merged))
  • occurence_id name url
  • occurence_id url with a null name)

Subsequent issues (already created) will handle:

1. Removal of feature flag
2. Population of missing data (which needs to be updated to specify data to be populated)

/cc @NicoleSchwartz @gonzoyumo