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



Published: 2021-11-04
Risk Medium
Patch available YES
Number of vulnerabilities 16
CVE-ID CVE-2021-39906
CVE-2021-39908
CVE-2021-39895
CVE-2021-39907
CVE-2021-39904
CVE-2021-39905
CVE-2021-39902
CVE-2021-39913
CVE-2021-39912
CVE-2021-39909
CVE-2021-39903
CVE-2021-39898
CVE-2021-39897
CVE-2021-39901
CVE-2021-39914
CVE-2021-39911
CWE-ID CWE-79
CWE-20
CWE-284
CWE-200
CWE-285
CWE-400
CWE-254
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Gitlab Community Edition
Universal components / Libraries / Software for developers

GitLab Enterprise Edition
Universal components / Libraries / Software for developers

Vendor GitLab, Inc

Security Bulletin

This security bulletin contains information about 16 vulnerabilities.

1) Stored cross-site scripting

EUVDB-ID: #VU57928

Risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39906

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 within the ipynb files. A remote authenticated attacker can inject 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: 13.5.0 - 14.4.0

GitLab Enterprise Edition: 13.5.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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: #VU57929

Risk: Medium

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

CVE-ID: CVE-2021-39908

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote authenticated attacker can abuse certain Unicode characters to commit malicious code into projects without being noticed in merge request or source code viewer UI.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 0.1.5 - 14.4.0

GitLab Enterprise Edition: 6.2.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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: #VU57930

Risk: Low

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

CVE-ID: CVE-2021-39895

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote user to compromise the target system.

The vulnerability exists due to pipeline schedules on imported projects can be set to automatically active after import. A remote administrator can set the pipeline schedules to be active in a project export so when an unsuspecting owner imports that project, pipelines are active by default on that project.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 8.0 - 14.4.0

GitLab Enterprise Edition: 8.0.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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.

4) Input validation error

EUVDB-ID: #VU57931

Risk: Medium

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

CVE-ID: CVE-2021-39907

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 the Workhorse. A remote 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: 13.7.0 - 14.4.0

GitLab Enterprise Edition: 13.7.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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.

5) Improper access control

EUVDB-ID: #VU57932

Risk: Low

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

CVE-ID: CVE-2021-39904

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 GraphQL API. A remote authenticated attacker can resolve discussions and apply suggestions after a project owner has locked the Merge Request.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.1.0 - 14.4.0

GitLab Enterprise Edition: 13.1.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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) Information disclosure

EUVDB-ID: #VU57933

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-2021-39905

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 authenticated attacker can see basic information on private groups that a public project has been shared with.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 8.9.6 - 14.4.0

GitLab Enterprise Edition: 8.9.6 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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.

7) Improper Authorization

EUVDB-ID: #VU57934

Risk: Low

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

CVE-ID: CVE-2021-39902

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 incorrect authorization. A remote authenticated attacker can modify the severity of an incident.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.4.0 - 14.4.0

GitLab Enterprise Edition: 13.4.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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) Information disclosure

EUVDB-ID: #VU57935

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-2021-39913

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 accidental logging of system root password in the migration log. 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: 0.1.5 - 14.4.0

GitLab Enterprise Edition: 6.2.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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.

9) Resource exhaustion

EUVDB-ID: #VU57936

Risk: Medium

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

CVE-ID: CVE-2021-39912

CWE-ID: CWE-400 - Uncontrolled Resource Consumption ('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. A remote attacker can use a specially crafted TIFF images, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.7.0 - 14.4.0

GitLab Enterprise Edition: 13.7.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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.

10) Security features bypass

EUVDB-ID: #VU57937

Risk: Medium

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

CVE-ID: CVE-2021-39909

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to lack of email address ownership verification in the CODEOWNERS feature. A remote authenticated attacker can bypass CODEOWNERS Merge Request approval requirement under rare circumstances.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 11.3.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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) Improper access control

EUVDB-ID: #VU57938

Risk: Medium

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39903

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 authenticated attacker can change the visibility level of a group or a project to a restricted option even after the instance administrator sets that visibility option as restricted in settings.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.0.0 - 14.4.0

GitLab Enterprise Edition: 13.0.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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) Information disclosure

EUVDB-ID: #VU57939

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-2021-39898

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 a project export leaks the external webhook token value. A remote attacker can access to the project which it was exported from.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 10.6 - 14.4.0

GitLab Enterprise Edition: 10.6.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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.

13) Improper access control

EUVDB-ID: #VU57940

Risk: Low

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

CVE-ID: CVE-2021-39897

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 still have access even after the subgroup is transferred.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 10.5 - 14.4.0

GitLab Enterprise Edition: 10.5.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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.

14) Information disclosure

EUVDB-ID: #VU57941

Risk: Low

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

CVE-ID: CVE-2021-39901

CWE-ID: CWE-200 - Information Exposure

Exploit availability: No

Description

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

The vulnerability exists due to SCIM token is visible after creation. A remote administrator can see the SCIM token of a group by visiting a specific endpoint.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 11.10.0 - 14.4.0

GitLab Enterprise Edition: 11.10.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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.

15) Input validation error

EUVDB-ID: #VU57942

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-2021-39914

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 regular expression denial of service issue when cleaning namespace path. 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: 8.13 - 14.4.0

GitLab Enterprise Edition: 8.13.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-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 access control

EUVDB-ID: #VU57943

Risk: Low

CVSSv3.1: 1.5 [CVSS:3.1/AV:P/AC:H/PR:L/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39911

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

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

The vulnerability exists due to improper access restrictions. An authenticated attacker with physical access can gain access to private email address of Issue.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.9.0 - 14.4.0

GitLab Enterprise Edition: 13.9.0 - 14.4.0


CPE2.3 External links

http://about.gitlab.com/releases/2021/10/28/security-release-gitlab-14-4-1-released/

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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



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