CVE-2021-39880: Medium severity GitLab GitLab vulnerability
A Denial Of Service vulnerability in the apollouploadserver Ruby gem in GitLab CE/EE all versions starting from 11.9 before 14.0.9, all versions starting from 14.1 before 14.1.4, and all versions starting from 14.2 before 14.2.2 allows an attacker to deny access to all users via specially crafted requests to the apollouploadserver middleware.
Affected Software
Event History
Frequently Asked Questions
What is CVE-2021-39880?
CVE-2021-39880 is a Denial of Service vulnerability in the apollo_upload_server Ruby gem in GitLab CE/EE.
Which versions of GitLab are affected by CVE-2021-39880?
All versions of GitLab starting from 11.9 before 14.0.9, all versions starting from 14.1 before 14.1.4, and all versions starting from 14.2 before 14.2.2 are affected.
How severe is CVE-2021-39880?
CVE-2021-39880 has a severity score of 6.5, which is classified as medium.
How can an attacker exploit CVE-2021-39880?
An attacker can exploit CVE-2021-39880 by sending specially crafted requests to the apollo_upload_server Ruby gem, which can result in a denial of service, denying access to all users.
Is there a fix for CVE-2021-39880?
Yes, GitLab has released fixes for CVE-2021-39880. It is recommended to update to the latest version of GitLab to mitigate the vulnerability.