zaproxy/community-scripts

Unauthenticated GitLab SSRF - CI Lint API [CVE-2021-22214]

Prince-Mendiratta opened this issue · 1 comments

Prince-Mendiratta commented

Vulnerability Details
This is based on SSRF due to CVE-2021-22214.
When requests to the internal network for webhooks are enabled, a server-side request forgery (SSRF) vulnerability in GitLab CE/EE affecting all versions starting from 10.5 was possible to exploit for an unauthenticated attacker even on a GitLab instance where registration is limited.

Our team at Astra Security would like to contribute the scan rule for detecting this vulnerability.

Vulnerable GitLab Versions

  • 10.5 - 13.10.5
  • 13.11 - 13.11.5
  • 13.12 - 13.12.2

GitLab Versions the script has been tested on -

  1. latest (14.1.0, at the time of release) -> Not Vulnerable (401 Not Authorized)
  2. 13.11.7 -> Not Vulnerable (401 Not Authorized)
  3. 13.11.2 -> Vulnerable
  4. 12.7.4 -> Vulnerable

Testing
To demonstrate this vulnerability, we have simulated the attack scenario at https://hypejab.herokuapp.com/api/v4/ci/lint . It can be used for testing purposes and an actual Vulnerable GitLab Instance should also respond in a similar manner.

References

The script has been tailored for both, Nashorn and Graal.js engines.

Signed-off by: prince.mendiratta@getastra.com

thc202 commented

It's not necessary to raise an issue if you are going to open a pull request.

  • 👍2