Multiple vulnerabilities in GitLab
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2021-22237 CVE-2021-22236 CVE-2021-22239 |
| CWE-ID | CWE-285 CWE-20 CWE-284 CWE-79 |
| 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 |
| Vendor | GitLab, Inc |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Improper Authorization
EUVDB-ID: #VU55734
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-22237
CWE-ID:
CWE-285 - Improper Authorization
Exploit availability: No
DescriptionThe vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to improper handling of impersonation tokens. Under specialized conditions, GitLab may allow a user with an impersonation token to perform Git actions even if impersonation is disabled.
MitigationInstall updates from vendor's website.
Vulnerable software versionsGitlab Community Edition: 13.12.0 - 14.1.1
GitLab Enterprise Edition: 13.12.0 - 14.1.1
External linkshttp://about.gitlab.com/releases/2021/08/03/security-release-gitlab-14-1-2-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.
2) Input validation error
EUVDB-ID: #VU55760
Risk: Medium
CVSSv3.1: 4 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-22236
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote user to bypass implemented security restrictions.
The vulnerability exists due to improper handling of OAuth client IDs. New subscriptions generated OAuth tokens on an incorrect OAuth client application. As a result, a remote user can obtain access to another user account.
Install updates from vendor's website.
Vulnerable software versionsGitlab Community Edition: 14.1.0 - 14.1.1
GitLab Enterprise Edition: 14.1.0 - 14.1.1
External linkshttp://about.gitlab.com/releases/2021/08/03/security-release-gitlab-14-1-2-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) Improper access control
EUVDB-ID: #VU55762
Risk: Medium
CVSSv3.1: 4.4 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-22239
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to improper access restrictions. A remote user can bypass implemented security restrictions and add metadata upon issue creation.
Install updates from vendor's website.
Vulnerable software versionsGitlab Community Edition: 14.0.0 - 14.1.1
GitLab Enterprise Edition: 14.0.0 - 14.1.1
External linkshttp://about.gitlab.com/releases/2021/08/03/security-release-gitlab-14-1-2-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.
4) Stored cross-site scripting
EUVDB-ID: #VU55766
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
DescriptionThe disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.
The vulnerability exists due to insufficient sanitization of user-supplied data when viewing mardown files. A remote user 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsGitlab Community Edition: 11.4 - 14.1.1
GitLab Enterprise Edition: 11.4.0 - 14.1.1
External linkshttp://about.gitlab.com/releases/2021/08/03/security-release-gitlab-14-1-2-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.
