Multiple vulnerabilities in GitLab

1) Improper certificate validation

EUVDB-ID: #VU50844

Risk: Medium

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to improper validation of the certificates for the Fortinet OTP. A remote attacker can bypass 2FA process and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.7.0 - 13.8.3

GitLab Enterprise Edition: 13.7.0 - 13.8.3

External links

http://about.gitlab.com/releases/2021/02/11/security-release-gitlab-13-8-4-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) Resource exhaustion

EUVDB-ID: #VU50845

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: N/A

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not properly control consumption of internal resources in gitlab-shell. A remote user can trigger resource exhaustion via a gitlab-shell command and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.6.0 - 13.8.3

GitLab Enterprise Edition: 12.6.0 - 13.8.3

External links

http://about.gitlab.com/releases/2021/02/11/security-release-gitlab-13-8-4-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) Resource exhaustion

EUVDB-ID: #VU50846

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: N/A

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

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

The vulnerability exists due to application does not delete pending jobs after project removal. A remote user can create unlimited number of jobs, trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.6.7 - 13.8.3

GitLab Enterprise Edition: 12.6.7 - 13.8.3

External links

http://about.gitlab.com/releases/2021/02/11/security-release-gitlab-13-8-4-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: #VU50847

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: N/A

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 output of confidential issue titles in branch logs. A remote non-authenticated attacker can view the branch log and gain unauthorized access to sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.0.0 - 13.8.3

GitLab Enterprise Edition: 13.0.0 - 13.8.3

External links

http://about.gitlab.com/releases/2021/02/11/security-release-gitlab-13-8-4-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: #VU50848

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: N/A

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. Demoted project members can access details on authored merge requests.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 3.0.1 - 13.8.3

GitLab Enterprise Edition: 6.2.0 - 13.8.3

External links

http://about.gitlab.com/releases/2021/02/11/security-release-gitlab-13-8-4-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 access control

EUVDB-ID: #VU50849

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: N/A

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 gain unauthorized access to the analytic pages.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.4.0 - 13.8.3

GitLab Enterprise Edition: 13.4.0 - 13.8.3

External links

http://about.gitlab.com/releases/2021/02/11/security-release-gitlab-13-8-4-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) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU50850

Risk: Medium

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

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 with API implementation. A remote non-authenticated attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems, when requests to the internal network for webhooks are enabled.

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 - 13.8.3

GitLab Enterprise Edition: 10.5.0 - 13.8.3

External links

http://about.gitlab.com/releases/2021/02/11/security-release-gitlab-13-8-4-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.

8) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU50851

Risk: Medium

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

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 Prometheus integration. 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: 13.2.0 - 13.8.3

GitLab Enterprise Edition: 13.2.0 - 13.8.3

External links

http://about.gitlab.com/releases/2021/02/11/security-release-gitlab-13-8-4-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.