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                             CERT-Renater

                 Note d'Information No. 2021/VULN139
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DATE                : 05/03/2021

HARDWARE PLATFORM(S): /

OPERATING SYSTEM(S): Systems running GitLab versions prior to 13.9.2,
                                    13.8.5, 13.7.8.

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https://about.gitlab.com/releases/2021/03/04/security-release-gitlab-13-9-2-released/
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 GitLab Security Release: 13.9.2, 13.8.5 and 13.7.8


Learn more about GitLab Security Release: 13.9.2, 13.8.5 and 13.7.8 for
GitLab Community Edition (CE) and Enterprise Edition (EE)

Today we are releasing versions 13.9.2, 13.8.5 and 13.7.8 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.

GitLab releases patches for vulnerabilities in dedicated security
releases. There are two types of security releases: a monthly, scheduled
security release, released a week after the feature release (which
deploys on the 22nd of each month), and ad-hoc security releases for
critical vulnerabilities. For more information, you can visit our
security FAQ. You can see all of our regular and security release blog
posts here. In addition, the issues detailing each vulnerability are
made public on our issue tracker 30 days after the release in which they
were patched.

We are dedicated to ensuring all aspects of GitLab that are exposed to
customers or that host customer data are held to the highest security
standards. As part of maintaining good security hygiene, it is highly
recommended that all customers upgrade to the latest security release
for their supported version. You can read more best practices in
securing your GitLab instance in our blog post.


JWT token leak via Workhorse

A path traversal vulnerability via the GitLab Workhorse in all versions
of GitLab could result in the leakage of a JWT token. We have requested
a CVE ID and will update this blog post when it is assigned.

Thanks @ledz1996 for reporting this vulnerability through our HackerOne
bug bounty program.

Remediation

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


Stored XSS in wiki pages

Insufficient input sanitization in wikis in GitLab version 13.8 and up
allows an attacker to exploit a stored cross-site scripting
vulnerability via a specially-crafted commit to a wiki. It is now
mitigated in the latest release and is assigned CVE-2021-22185.

Thanks @yvvdwf for reporting this vulnerability through our HackerOne
bug bounty program.

Remediation

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


Group Maintainers are able to use the Group CI/CD Variables API

An authorization issue in GitLab CE/EE version 9.4 and up allowed a
group maintainer to modify group CI/CD variables which should be
restricted to group owners. It is now mitigated in the latest release
and is assigned CVE-2021-22186.

Thanks to a customer for reporting this vulnerability to the GitLab
team.

Remediation

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


Insecure storage of GitLab session keys

In all versions of GitLab, marshalled session keys were being stored in
Redis. We have requested a CVE ID and will update this blog post when it
is assigned.

Thanks to a customer for reporting this vulnerability to the GitLab
team.

Remediation

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

Update thrift gem

The thrift gem has been upgraded to 0.14.0 in order to mitigate security
concerns.


Versions Affected

Affects versions 11.8 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 swagger-ui-dist dependency

The dependency on swagger-ui-dist has been upgraded to 3.43.0 in order
to mitigate security concerns.

Thanks @kannthu for reporting this through our HackerOne bug bounty
program.

Versions Affected

Affects versions 13.7 and later.

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. To update Gitlab Runner, see the
Updating the Runner page.


Receive Security Release Notifications

To receive security release blog notifications delivered to your inbox,
visit our contact us page. To receive security release blog
notifications via RSS, subscribe to our RSS feed.


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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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