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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.1285 GitLab Critical Security Release: 13.10.3, 13.9.6, and 13.8.8 15 April 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: GitLab Community Edition GitLab Enterprise Edition Publisher: GitLab Operating System: Windows UNIX variants (UNIX, Linux, OSX) Virtualisation Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated Create Arbitrary Files -- Remote with User Interaction Reduced Security -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2021-28965 Reference: ESB-2021.1147 ESB-2021.1145 Original Bulletin: https://about.gitlab.com/releases/2021/04/14/security-release-gitlab-13-10-3-released Comment: A CVE has not yet been assigned for the critical remote code execution vulnerability. GitLab have requested a CVE ID for the vulnerability and the blog post will be updated once it has been assigned. - --------------------------BEGIN INCLUDED TEXT-------------------- GitLab Critical Security Release: 13.10.3, 13.9.6, and 13.8.8 Today we are releasing versions 13.10.3, 13.9.6, and 13.8.8 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. Table of Fixes Title Severity Remote code execution when uploading specially crafted critical image files Update Rexml Dependency update - critical Remote code execution when uploading specially crafted image files An issue has been discovered in GitLab CE/EE affecting all versions starting from 11.9. GitLab was not properly validating image files that is passed to a file parser which resulted in a remote command execution. This is a critical severity issue (AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H, 9.9). We have requested a CVE ID and will update this blog post when it is assigned. Thanks vakzz 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. Update Rexml The Rexml ruby gem was upgraded to version 3.2.5 in order to mitigate CVE-2021-28965. Versions affected Affects versions 7.12 and later. Updating To update GitLab, see the Update page. To update Gitlab Runner, see the Updating the Runner page. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== 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) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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