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

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU58753

Risk: Medium

CVSSv3.1: 6.2 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39944

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to escalate privileges on the system.

The vulnerability exists due to application does not properly impose security restrictions, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 11.0 - 14.5.1

GitLab Enterprise Edition: 11.0.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

2) Input validation error

EUVDB-ID: #VU58760

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-2021-39932

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 in the Diff feature. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 11.0 - 14.5.1

GitLab Enterprise Edition: 11.0.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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) Input validation error

EUVDB-ID: #VU58759

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-2021-39940

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 authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.2.0 - 14.5.1

GitLab Enterprise Edition: 13.2.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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) Information disclosure

EUVDB-ID: #VU58758

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-2021-39930

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 missing authorization. A remote authenticated attacker can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 12.4.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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: #VU58757

Risk: Low

CVSSv3.1: 3.9 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39919

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application in logs. A local administrator can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 14.0.0 - 14.5.1

GitLab Enterprise Edition: 14.0.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-released/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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

6) Improper access control

EUVDB-ID: #VU58756

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39915

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote attacker can bypass implemented security restrictions and see the names of project access tokens on arbitrary projects.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.0.0 - 14.5.1

GitLab Enterprise Edition: 13.0.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

7) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU58755

Risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39937

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to escalate privileges on the system.

The vulnerability exists due to a collision in access memoization logic, which leads to security restrictions bypass and privilege escalation.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 0.1.5 - 14.5.1

GitLab Enterprise Edition: 6.2.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

8) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU58754

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39935

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. 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 Community Edition: 10.5 - 14.5.1

GitLab Enterprise Edition: 10.5.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

9) Input validation error

EUVDB-ID: #VU58769

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-2021-39933

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 within user comments. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.10.0 - 14.5.1

GitLab Enterprise Edition: 12.10.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

10) Improper access control

EUVDB-ID: #VU58778

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-2021-39934

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote authenticated attacker can bypass implemented security restrictions and retrieve the service desk email address.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.10.0 - 14.5.1

GitLab Enterprise Edition: 12.10.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

11) Input validation error

EUVDB-ID: #VU58779

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-2021-39917

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 within quick actions. A remote authenticated attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.9.0 - 14.5.1

GitLab Enterprise Edition: 12.9.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

12) Improper access control

EUVDB-ID: #VU58780

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-2021-39916

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in the External Status Check feature. A remote authenticated attacker can bypass implemented security restrictions and retrieve the configuration of any External Status Check.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 14.1.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

13) Information disclosure

EUVDB-ID: #VU58781

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-2021-39941

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. A remote attacker can see the default branch name for projects that restrict access to the repository to project members.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.0.0 - 14.5.1

GitLab Enterprise Edition: 12.0.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

14) Improper access control

EUVDB-ID: #VU58782

Risk: Low

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

CVE-ID: CVE-2021-39936

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote authenticated attacker can bypass implemented security restrictions and access a project's disabled wiki.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 10.7 - 14.5.1

GitLab Enterprise Edition: 10.7.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

15) Resource exhaustion

EUVDB-ID: #VU58783

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39938

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources within deploy Slash commands. A remote authenticated attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 8.15 - 14.5.1

GitLab Enterprise Edition: 8.15.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

16) Improper Authorization

EUVDB-ID: #VU58784

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39918

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authorization check.

The vulnerability exists due to incorrect authorization. A remote authenticated attacker can add comments to a vulnerability which cannot be accessed.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 11.1.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

17) Business Logic Errors

EUVDB-ID: #VU58785

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39931

CWE-ID: CWE-840 - Business Logic Errors (3.0)

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to a business logic error. A remote authenticated attacker can bypass implemented security restrictions and delete a protected branches

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 8.11 - 14.5.1

GitLab Enterprise Edition: 8.11.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

18) Improper access control

EUVDB-ID: #VU58786

Risk: Low

CVSSv3.1: 2.4 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39945

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote administrator can approve the Merge Request even after having their project access revoked.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 9.4 - 14.5.1

GitLab Enterprise Edition: 9.4.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-released/

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.

19) Cross-site scripting

EUVDB-ID: #VU58787

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39910

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in Swagger UI. A remote authenticated attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.6.0 - 14.5.1

GitLab Enterprise Edition: 12.6.0 - 14.5.1

CPE2.3

External links

http://about.gitlab.com/releases/2021/12/06/security-release-gitlab-14-5-2-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.

Risk	Medium
Patch available	YES
Number of vulnerabilities	19
CVE-ID	CVE-2021-39944 CVE-2021-39932 CVE-2021-39940 CVE-2021-39930 CVE-2021-39919 CVE-2021-39915 CVE-2021-39937 CVE-2021-39935 CVE-2021-39933 CVE-2021-39934 CVE-2021-39917 CVE-2021-39916 CVE-2021-39941 CVE-2021-39936 CVE-2021-39938 CVE-2021-39918 CVE-2021-39931 CVE-2021-39945 CVE-2021-39910
CWE-ID	CWE-264 CWE-20 CWE-200 CWE-284 CWE-918 CWE-400 CWE-285 CWE-840 CWE-79
Exploitation vector	Network
Public exploit	N/A
Vulnerable software	Gitlab Community Edition Universal components / Libraries / Software for developers GitLab Enterprise Edition Universal components / Libraries / Software for developers
Vendor	GitLab, Inc