Multiple vulnerabilities in GitLab

1) Stored cross-site scripting

EUVDB-ID: #VU50382

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: N/A

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 merge requests. A remote 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: 13.7.0 - 13.8.1

GitLab Enterprise Edition: 13.7.0 - 13.8.1

External links

http://about.gitlab.com/releases/2021/02/01/security-release-gitlab-13-8-2-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) Stored cross-site scripting

EUVDB-ID: #VU50383

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: N/A

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 epics page. A remote 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: 11.8.0 - 13.8.1

GitLab Enterprise Edition: 11.8.0 - 13.8.1

External links

http://about.gitlab.com/releases/2021/02/01/security-release-gitlab-13-8-2-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) Inclusion of Sensitive Information in Log Files

EUVDB-ID: #VU50384

Risk: Low

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

CVE-ID: N/A

CWE-ID: CWE-532 - Information Exposure Through Log Files

Exploit availability: No

Description

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

The vulnerability exists due to software stores sensitive information into log files. A local user can read the structured log and obtain sensitive GraphQL variables.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.0.0 - 13.8.1

GitLab Enterprise Edition: 12.0.0 - 13.8.1

External links

http://about.gitlab.com/releases/2021/02/01/security-release-gitlab-13-8-2-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.

4) Security features bypass

EUVDB-ID: #VU50387

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/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-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of DNS rebinding protection feature. A remote attacker can bypass implemented security restrictions and perform DNS rebindingattacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.2.0 - 13.8.1

GitLab Enterprise Edition: 12.2.0 - 13.8.1

External links

http://about.gitlab.com/releases/2021/02/01/security-release-gitlab-13-8-2-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.

5) Information disclosure

EUVDB-ID: #VU50388

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-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 software allows to validate existence of private projects in a group. A remote attacker can verify if the specific name for private project exists in a group.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 0.1.5 - 13.8.1

GitLab Enterprise Edition: 6.2.0 - 13.8.1

External links

http://about.gitlab.com/releases/2021/02/01/security-release-gitlab-13-8-2-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.

6) Improper access control

EUVDB-ID: #VU50385

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-2021-22172

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 guest user in a private project to view tag data that should be inaccessible on the releases page.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.8.0 - 13.8.1

GitLab Enterprise Edition: 12.8.0 - 13.8.1

External links

http://about.gitlab.com/releases/2021/02/01/security-release-gitlab-13-8-2-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) Information exposure through externally-generated error message

EUVDB-ID: #VU50386

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-2021-22169

CWE-ID: N/A

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 while handling error conditions. A remote attacker can obtain sensitive information on the system, such as internal IP address.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 13.4.0 - 13.8.1

External links

http://about.gitlab.com/releases/2021/02/01/security-release-gitlab-13-8-2-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.