Improper Input Validation in GitLab Runner
CVE-2022-2251

8HIGH

Key Information:

Vendor

Gitlab
Status
Gitlab Runner
Vendor
CVE Published:
17 January 2023

What is CVE-2022-2251?

The security flaw in GitLab Runner arises from inadequate sanitization of branch names, which may allow an attacker to create a branch with a carefully crafted name. If another user subsequently triggers a pipeline related to this branch, malicious commands could be executed within the context of that user's environment, leading to unauthorized actions. This vulnerability affects multiple versions of GitLab Runner and underscores the necessity of proper input validation mechanisms to mitigate such risks.

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Affected Version(s)

GitLab Runner <15.3.5 < 15.3.5

GitLab Runner >=15.4, <15.4.4 < 15.4, 15.4.4

GitLab Runner >=15.5, <15.5.2 < 15.5, 15.5.2

References

https://gitlab.com/gitlab-org/gitlab-runner/-/issues/27386
https://hackerone.com/reports/1063511
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE...

CVSS V3.1

Score:
8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Thanks [stanlyoncm](https://hackerone.com/stanlyoncm) for reporting this vulnerability through our HackerOne bug bounty program
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