Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2021.3666
GitLab Critical Security Release
3 November 2021
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AusCERT Security Bulletin Summary
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Product: GitLab Community Edition
GitLab Enterprise Edition
Publisher: GitLab
Operating System: Windows
Virtualisation
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Reduced Security -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2021-22205
Reference: ESB-2021.1285
Original Bulletin:
https://about.gitlab.com/releases/2021/04/14/security-release-gitlab-13-10-3-released/
https://page.gitlab.com/index.php/email/emailWebview?mkt_tok=MTk0LVZWQy0yMjEAAAGAgcD3d63Dsk59q93vgmChgBk4hz1ZmKBqVZan3iU-un44Z2x6r-fXfsrZ1kzBTEVmhHgO2I23V7NTlZMNDmiB4IoONYWZ_16Z1ztBjvLORz0gp-A&md_id=28630
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Self-managed customers running the following GitLab versions are vulnerable
to a publicly available exploit:
11.9.x - 13.8.7
13.9.0 - 13.9.5
13.10.0 - 13.10.2
This critical vulnerability is the result of improper validation of image
files by a 3rd-party file parser, resulting in a remote command execution
vulnerability.
This issue was remediated and patched in the GitLab 13.10.3, 13.9.6, and 13
.8.8 release from April 14, 2021: https://about.gitlab.com/releases/2021/04
/14/security-release-gitlab-13-10-3-released/.
GitLab has confirmed reports of the vulnerability being exploited on
self-hosted public-facing GitLab instances.
Prior communication indicated that the vulnerability (CVE-2021-22205
https://cve.mitre.org/cgi-bin/cvename.cgi?name=3DCVE-2021-22205) required an
authenticated user (e.g. an existing user on a GitLab instance) to exploit,
but it has been confirmed that any GitLab instance running a vulnerable version
can be exploited without the malicious actor needing to have an existing
account on the instance.
Users running outdated versions listed above should upgrade to the latest
version as soon as possible: https://about.gitlab.com/update.
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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
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On call after hours for member emergencies only.
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