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A essential unauthenticated, distant code execution GitLab flaw mounted on April 14, 2021, stays exploitable, with over 50% of deployments remaining unpatched.
The vulnerability is tracked as CVE-2021-22205 and has a CVSS v3 rating of 10.0, permitting an unauthenticated, distant attacker to execute arbitrary instructions because the ‘git’ person (repository admin).
This vulnerability provides the distant attacker full entry to the repository, together with deleting, modifying, and stealing supply code.
Exploitation within the wild
Hackers first began exploiting internet-facing GitLab servers in June 2021 to create new customers and provides them admin rights.
The actors used a working exploit revealed on GitHub on June 4, 2021, permitting them to abuse the weak ExifTool part.
The menace actors don’t must authenticate or use a CSRF token or perhaps a legitimate HTTP endpoint to make use of the exploit.
With the exploitation persevering with to this present day, researchers from Rapid7 determined to look into the variety of unpatched methods and decide the scope of the underlying downside.
In keeping with a report revealed by Rapid7, at the very least 50% of the 60,000 internet-facing GitLab installations they discovered aren’t patched in opposition to the essential RCE flaw mounted six months in the past.
Furthermore, one other 29% could or might not be weak, because the analysts could not extract the model string for these servers.
Admins must replace to one of many following variations to patch the flaw:
Any variations sooner than that and all the way down to 11.9 are weak to exploitation whether or not you’re utilizing GitLab Enterprise Version (EE) or GitLab Neighborhood Version (CE).
For extra particulars on how you can replace GitLab, try this devoted portal.
To make sure that your GitLab occasion is not weak to exploitation, you possibly can examine its response to POST requests that try to take advantage of ExifTool’s mishandling of picture information.
The patched variations nonetheless permit somebody to succeed in out to ExifTool, however the response to the request ought to be a rejection within the type of an HTTP 404 error.
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