Multiple vulnerabilities in GitLab, Gitlab Community Edition



| Updated: 2020-07-17
Risk High
Patch available YES
Number of vulnerabilities 5
CVE-ID CVE-2020-12275
CVE-2020-12276
CVE-2020-12277
CVE-2020-10955
CVE-2020-10956
CWE-ID CWE-269
CWE-79
CWE-276
CWE-200
CWE-918
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Gitlab Community Edition
Universal components / Libraries / Software for developers

Vendor GitLab, Inc

Security Bulletin

This security bulletin contains information about 5 vulnerabilities.

1) Improper Privilege Management

EUVDB-ID: #VU30294

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-12275

CWE-ID: CWE-269 - Improper Privilege Management

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

GitLab 12.6 through 12.9 is vulnerable to a privilege escalation that allows an external user to create a personal snippet through the API.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.9.0

CPE2.3 External links

https://about.gitlab.com/releases/2020/03/26/security-release-12-dot-9-dot-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.

2) Cross-site scripting

EUVDB-ID: #VU30295

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-12276

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 permanently 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

Update to version 12.9.1.

Vulnerable software versions

Gitlab Community Edition: 12.9.0

CPE2.3 External links

https://about.gitlab.com/releases/2020/03/26/security-release-12-dot-9-dot-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.

3) Incorrect default permissions

EUVDB-ID: #VU30296

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-12277

CWE-ID: CWE-276 - Incorrect Default Permissions

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

GitLab 10.8 through 12.9 has a vulnerability that allows someone to mirror a repository even if the feature is not activated.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.9.0

CPE2.3 External links

https://about.gitlab.com/releases/2020/03/26/security-release-12-dot-9-dot-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.

4) Information disclosure

EUVDB-ID: #VU30320

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-10955

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

GitLab EE/CE 11.1 through 12.9 is vulnerable to parameter tampering on an upload feature that allows an unauthorized user to read content available under specific folders.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 11.1.0 - 12.9.0

CPE2.3 External links

https://about.gitlab.com/releases/2020/03/26/security-release-12-dot-9-dot-1-released/
https://about.gitlab.com/releases/categories/releases/
https://www.debian.org/security/2020/dsa-4691


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) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU30321

Risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-10956

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

GitLab 8.10 and later through 12.9 is vulnerable to an SSRF in a project import note feature.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 8.10.0 - 12.9.0

CPE2.3 External links

https://about.gitlab.com/releases/2020/03/26/security-release-12-dot-9-dot-1-released/
https://about.gitlab.com/releases/categories/releases/


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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