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



Published: 2020-10-05
Risk High
Patch available YES
Number of vulnerabilities 13
CVE-ID CVE-2020-13333
CVE-2020-13332
CVE-2020-13335
CVE-2020-13334
CVE-2020-13327
CWE-ID CWE-256
CWE-79
CWE-200
CWE-20
CWE-77
CWE-284
CWE-285
CWE-300
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Gitlab Community Edition
Universal components / Libraries / Software for developers

GitLab Enterprise Edition
Universal components / Libraries / Software for developers

gitlab-runner
Other software / Other software solutions

Vendor GitLab, Inc
docs.gitlab.com

Security Bulletin

This security bulletin contains information about 13 vulnerabilities.

1) Unprotected storage of credentials

EUVDB-ID: #VU47315

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-256 - Unprotected Storage of Credentials

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to other users' credentials.

The vulnerability exists due to application stored credentials in plain text in a configuration file on the system in Redis. A remote attacker can view contents of the configuration file and gain access to passwords for 3rd party integration.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 10.8 - 13.4.1

GitLab Enterprise Edition: 10.8.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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) Cross-site scripting

EUVDB-ID: #VU47322

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/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. 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: 10.8 - 13.4.1

GitLab Enterprise Edition: 10.8.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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.

3) Information disclosure

EUVDB-ID: #VU47323

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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 excessive data output by the application. A remote attacker can view private custom project template.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Enterprise Edition: 11.2.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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.

4) Cross-site scripting

EUVDB-ID: #VU47324

Risk: Low

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/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 SVG image preview. 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: 12.10.0 - 13.4.1

GitLab Enterprise Edition: 12.10.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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) Input validation error

EUVDB-ID: #VU47326

Risk: Medium

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

CVE-ID: N/A

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 rate-limiting at re-sending confirmatil email. A remote atttacker can compromise the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 10.1 - 13.4.1

GitLab Enterprise Edition: 10.1.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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.

6) Input validation error

EUVDB-ID: #VU47327

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the system.

The vulnerability exists due to an improper type check in GraphQL. A remote user with developer role can perform unauthorised actions.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.1.0 - 13.4.1

GitLab Enterprise Edition: 13.1.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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) Input validation error

EUVDB-ID: #VU47328

Risk: Medium

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

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the system.

The vulnerability exists due to to-dos are not redacted when membership changes. A remote attacker compromise the target syste.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 11.2 - 13.4.1

GitLab Enterprise Edition: 11.2.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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) Command Injection

EUVDB-ID: #VU47330

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-77 - Command injection

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary commands on the target system.

The vulnerability exists due to improper input validation.on windows runner host. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary commands on the target system.

uccessful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.0.0 - 13.4.1

GitLab Enterprise Edition: 12.0.0 - 13.4.0

gitlab-runner: 12.0.2 - 13.4.1

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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: #VU47314

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13333

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 release api. 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: 13.1.0 - 13.4.1

GitLab Enterprise Edition: 13.1.0 - 13.3.6

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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) Improper access control

EUVDB-ID: #VU47321

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13332

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 user can access projects with an expired access date.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 8.11.0 - 13.4.1

GitLab Enterprise Edition: 8.11.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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: #VU47325

Risk: Medium

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

CVE-ID: CVE-2020-13335

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 insufficient check before account deletion. A remote attacker can bypass implemented security restrictions and delete an account while being the owner of a group.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 7.12 - 13.4.1

GitLab Enterprise Edition: 7.12.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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.

12) Improper Authorization

EUVDB-ID: #VU47329

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-13334

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 change the confidentiality attribute of issue via mutation GraphQL query.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 8.6 - 13.4.1

GitLab Enterprise Edition: 8.6.0 - 13.4.0

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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) Man-in-the-Middle (MitM) attack

EUVDB-ID: #VU47331

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: CVE-2020-13327

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.

The vulnerability exists due to Insecure Runner Configuration in Kubernetes Environments. A remote attacker can perform perform a man-in-the-middle attack on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.2.0 - 13.4.1

GitLab Enterprise Edition: 13.2.0 - 13.4.0

gitlab-runner: 13.2 - 13.4

External links

http://about.gitlab.com/releases/2020/10/01/security-release-13-4-2-release/


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.



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