Multiple vulnerabilities in Gitlab Community Edition
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2020-7973 CVE-2019-16779 CVE-2019-18978 |
| CWE-ID | CWE-79 CWE-362 CWE-22 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Gitlab Community Edition Universal components / Libraries / Software for developers |
| Vendor | GitLab, Inc |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Cross-site scripting
EUVDB-ID: #VU25035
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: CVE-2020-7973
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: No
DescriptionThe 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 the file API. 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsGitlab Community Edition: 12.5.0 - 12.7.2
CPE2.3
- cpe:2.3:a:gitlab:gitlab:12.7.0:*:*:*:*:*:*:*
- Full software list in CPE2.3 format available after registration.
http://about.gitlab.com/blog/categories/releases/
http://about.gitlab.com/releases/2020/01/30/security-release-gitlab-12-7-4-released/
http://gitlab.com/gitlab-org/security/gitlab/issues/14
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) Race condition
EUVDB-ID: #VU25102
Risk: Medium
CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2019-16779
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information on the target system.
The vulnerability exists due to a race condition around persistent connections, where a connection which is interrupted (such as by a timeout) would leave data on the socket. A remote attacker can exploit the race and gain unauthorized access to sensitive information on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsGitlab Community Edition: 5.3.0 - 12.7.2
CPE2.3
- cpe:2.3:a:gitlab:gitlab_community_edition:12.7.2:*:*:*:*:*:*:*
- Full software list in CPE2.3 format available after registration.
http://about.gitlab.com/releases/2020/01/30/security-release-gitlab-12-7-4-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.
3) Path traversal
EUVDB-ID: #VU25103
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: CVE-2019-18978
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to resource matching does not ensure that pathnames are in a canonical format when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsGitlab Community Edition: 6.4.0 - 12.7.2
CPE2.3
- cpe:2.3:a:gitlab:gitlab_community_edition:12.7.2:*:*:*:*:*:*:*
- Full software list in CPE2.3 format available after registration.
http://about.gitlab.com/releases/2020/01/30/security-release-gitlab-12-7-4-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.
