Vulnerability · Published Oct 5, 2021 · Assigned by GitLab
CVE-2021-39880
Medium 6.5
In plain English
A medium-severity security flaw in GitLab from GitLab. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 81% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.5Medium
Exploit odds (30 days)2.1%top 18.5% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A Denial Of Service vulnerability in the apollo_upload_server 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 apollo_upload_server middleware.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | ruby-apollo-upload-server | 2.1.0-1 | DEBIAN-CVE-2021-39880 |
| Debian:13 | ruby-apollo-upload-server | 2.1.0-1 | DEBIAN-CVE-2021-39880 |
| Debian:14 | ruby-apollo-upload-server | 2.1.0-1 | DEBIAN-CVE-2021-39880 |
| RubyGems | apollo_upload_server | 2.1.0 | GHSA-w6pv-c757-6rgr |
Affected products (as reported)
References
- https://gitlab.com/gitlab-org/gitlab/-/issues/330561 x_refsource_MISC
- https://hackerone.com/reports/1181284 x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39880.json x_refsource_CONFIRM