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AUSCERT External Security Bulletin Redistribution
GitLab 12.8.6 patches unconfirmed sign-up flow
12 March 2020
AusCERT Security Bulletin Summary
Product: GitLab Community Edition
GitLab Enterprise Edition
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Unauthorised Access -- Remote/Unauthenticated
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Mar 11, 2020 - Ethan Strike
GitLab Critical Security Release: 12.8.6
Today we are releasing version 12.8.6 for GitLab Community Edition (CE) and
Enterprise Edition (EE).
This version contains an important security fix, and we strongly recommend that
all GitLab installations be upgraded to one of these versions immediately.
The vulnerability details will be made public on our issue tracker in
approximately 30 days.
Please read on for more information regarding this release.
Email Confirmation not Required on Sign-up
With the release of 12.8.0, a soft email confirmation sign-up flow was enabled
by default. For instances with sign-up enabled, users were able to sign up and
access the instance for a 2 day grace period with an unconfirmed email address,
potentially bypassing domain restrictions. The change was reverted and is
awaiting a CVE.
Affects GitLab CE/EE 12.8.0 through 12.8.5.
We strongly recommend that all installations running an affected version above
are upgraded to the latest version as soon as possible.
To update GitLab, see the Update page.
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