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                             CERT-Renater

                 Note d'Information No. 2020/VULN190
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DATE                : 15/04/2020

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running GitLab Community Edition,
                     GitLab Enterprise Edition versions prior to 12.9.3,
                                  12.8.9, 12.7.9.

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https://about.gitlab.com/releases/2020/04/14/critical-security-release-gitlab-12-dot-9-dot-3-released/
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GitLab Critical Security Release: 12.9.3, 12.8.9, and 12.7.9

Today we are releasing versions 12.9.3, 12.8.9, and 12.7.9 for GitLab
Community Edition (CE) and Enterprise Edition (EE).

These versions contain important security fixes, 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.


NuGet Package and File Disclosure through GitLab Workhorse

An internal investigation revealed that a particular header could be
used to override restriction and results in GitLab Workhorse disclosing
NuGet packages and files in the /tmp directory. The issue is now
mitigated in the latest release and is assigned CVE-2020-11505.

Thanks to @vakzz for also responsibly reporting this vulnerability to
us.


Versions Affected

Affects GitLab EE 12.8.0 and later.

Remediation

We strongly recommend that all installations running an affected version
above are upgraded to the latest version as soon as possible.



Job Artifact Uploads and File Disclosure through GitLab Workhorse

An internal investigation revealed that a particular header could be
used to override restrictions and results in GitLab Workhorse disclosing
job artifact uploads and files in the /tmp directory. The issue is now
mitigated in the latest release and is assigned CVE-2020-11506.

Thanks to @manassehzhou for also responsibly reporting this
vulnerability to us.


Versions Affected

Affects GitLab EE/CE 10.7.0 and later.


Remediation

We strongly recommend that all installations running an affected version
above are upgraded to the latest version as soon as possible.



Incorrect membership following group removal

An internal investigation revealed that members of a group could still
have access after a group is deleted. The issue is now mitigated in the
latest release and is assigned CVE-2020-11649.


Versions Affected

Affects GitLab EE/CE 8.15 and later.


Remediation

We strongly recommend that all installations running an affected version
above are upgraded to the latest version as soon as possible.



Logging of Praefect tokens

An internal investigation revealed that Praefect tokens were logged by
Gitaly.

The issue is now fixed.


Versions Affected

Affects GitLab Omnibus 12.3 and later.


Remediation

We strongly recommend that all installations running an affected version
above are upgraded to the latest version as soon as possible.



Update Rack dependency

The Rack dependency and its related gems have been upgraded to 2.0.9.
This upgrade includes a security fix for CVE-2019-16782.


Versions Affected

Affects all previous versions of GitLab CE/EE.


Remediation

We strongly recommend that all installations running an affected version
above are upgraded to the latest version as soon as possible.



Update OpenSSL dependency

The OpenSSL dependency has been upgraded from 1.1.d to 1.1.1f to include
those improvements.


Versions Affected

Affects all previous versions of GitLab Omnibus.

Remediation

We strongly recommend that all installations running an affected version
above are upgraded to the latest version as soon as possible.

Updating

To update GitLab, see the Update page.


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+ CERT-RENATER        | tel : 01-53-94-20-44            +
+ 23/25 Rue Daviel    | fax : 01-53-94-20-41            +
+ 75013 Paris         | email:cert@support.renater.fr   +
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