Multiple vulnerabilities in GitLab Community Edition (CE) and Enterprise Edition (EE)

1) Information disclosure

EUVDB-ID: #VU82619

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5831

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to excessive data output by the application when s"uper_sidebar_logged_out" feature flag is enabled. A remote attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 16.0.0 - 16.5.0

GitLab Enterprise Edition: 16.0.0 - 16.5.0

External links

http://about.gitlab.com/releases/2023/10/31/security-release-gitlab-16-5-1-16-4-2-16-3-6-released/

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.

2) Input validation error

EUVDB-ID: #VU82621

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5825

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote user can point a CI/CD Component to an incorrect path and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 16.2.0 - 16.5.0

GitLab Enterprise Edition: 16.2.0 - 16.5.0

External links

http://about.gitlab.com/releases/2023/10/31/security-release-gitlab-16-5-1-16-4-2-16-3-6-released/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

3) Incorrect Regular Expression

EUVDB-ID: #VU82622

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3909

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient timeout input validation when processing regular expressions in gitlab-ci.yml file. A remote user can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.3.0 - 16.5.0

GitLab Enterprise Edition: 12.3.0 - 16.5.0

External links

http://about.gitlab.com/releases/2023/10/31/security-release-gitlab-16-5-1-16-4-2-16-3-6-released/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

4) Input validation error

EUVDB-ID: #VU82636

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-3246

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote user can block Sidekiq job processor and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 0.1.5 - 16.5.0

GitLab Enterprise Edition: 6.2.0 - 16.5.0

External links

http://about.gitlab.com/releases/2023/10/31/security-release-gitlab-16-5-1-16-4-2-16-3-6-released/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

5) Information disclosure

EUVDB-ID: #VU82637

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5600

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to excessive data output by the application in the service-desk custom email template. A remote user can gain access to the titles of an private specific references.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 16.0.0 - 16.5.0

GitLab Enterprise Edition: 16.0.0 - 16.5.0

External links

http://about.gitlab.com/releases/2023/10/31/security-release-gitlab-16-5-1-16-4-2-16-3-6-released/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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

6) Improper Authorization

EUVDB-ID: #VU82640

Risk: Low

CVSSv3.1: 3.1 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-4700

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to improper authorization. A remote user can run jobs in protected environments and bypass any required approvals.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 14.7.0 - 16.5.0

External links

http://about.gitlab.com/releases/2023/10/31/security-release-gitlab-16-5-1-16-4-2-16-3-6-released/

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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