Multiple vulnerabilities in GitLab Enterprise Edition

1) Improper access control

EUVDB-ID: #VU21189

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-6996

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to an access control issue in the merge request approvers section. A remote authenticated attacker can view membership of private groups.

Mitigation

Install update from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 10.6.0 - 11.7.0

CPE2.3

• cpe:2.3:a:gitlab:gitlab-ee:10.6.0:*:*:*:*:*:*:*
• cpe:2.3:a:gitlab:gitlab-ee:10.6.1:*:*:*:*:*:*:*
• cpe:2.3:a:gitlab:gitlab-ee:10.6.2:*:*:*:*:*:*:*

External links

https://about.gitlab.com/2019/01/31/security-release-gitlab-11-dot-7-dot-3-released/
https://gitlab.com/gitlab-org/gitlab-ee/issues/8187

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU21175

Risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2019-6793

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in the Jira integration feature. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 10.0.0 - 11.7.0

CPE2.3

• cpe:2.3:a:gitlab:gitlab-ee:10.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:gitlab:gitlab-ee:10.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:gitlab:gitlab-ee:10.0.2:*:*:*:*:*:*:*

External links

https://about.gitlab.com/2019/01/31/security-release-gitlab-11-dot-7-dot-3-released/
https://gitlab.com/gitlab-org/gitlab-ce/issues/50748

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. However, proof of concept for this vulnerability is available.