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GitLab: GitLab::UrlBlocker validation bypass leading to full Server Side Request Forgery

🗓️ 17 Apr 2019 09:18:36Reported by ajxchapmanType 
hackerone
 hackerone🔗 hackerone.com👁 29 Views

The `GitLab::UrlBlocker` IP address validation methods suffer from a Time of Check to Time of Use (ToCToU) vulnerability allowing authenticated users to send GET and POST HTTP requests to arbitrary hosts, including localhost, cloud metadata services, and local network

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12 Dec 2019 11:56Current
6.9Medium risk
Vulners AI Score6.9
gitlaburlblockertime of checktime of usetoctouvulnerabilityauthenticated usersget requestspost requestsarbitrary hostslocalhostcloud metadata serviceslocal network
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