Vulnerability · Published Oct 5, 2021 · Assigned by GitLab

CVE-2021-39867

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 0.9% (higher than 60% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.9%top 40.4% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

In all versions of GitLab CE/EE since version 8.15, a DNS rebinding vulnerability in Gitea Importer may be exploited by an attacker to trigger Server Side Request Forgery (SSRF) attacks.

Affected products (as reported)

Vendor	Product	Versions
GitLab	GitLab	>=8.15, <14.1.7>=14.2, <14.2.5>=14.3, <14.3.1

References

https://gitlab.com/gitlab-org/gitlab/-/issues/214401 x_refsource_MISC
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39867.json x_refsource_CONFIRM