Improper Authorization in Jenkins Gitlab Authentication plugin



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-2228
CWE-ID CWE-285
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Gitlab Authentication
Client/Desktop applications / Software for system administration

Vendor Jenkins

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper Authorization

EUVDB-ID: #VU30134

Risk: High

CVSSv4.0: 7.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-2228

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authorization process.

The vulnerability exists due to the affected plugin does not differentiate between user names and hierarchical group names when performing authorization. A remote attacker with permissions to create groups in GitLab can gain the privileges granted to another user or group.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Authentication: 0.1 - 1.5

CPE2.3 External links

https://www.openwall.com/lists/oss-security/2020/07/15/5
https://jenkins.io/security/advisory/2020-07-15/#SECURITY-1792


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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