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



| Updated: 2022-08-20
Risk High
Patch available YES
Number of vulnerabilities 10
CVE-ID CVE-2021-22213
CVE-2021-22181
CVE-2021-22214
CVE-2021-22217
CVE-2021-22221
CVE-2021-22216
CVE-2021-22220
CVE-2021-22219
CVE-2021-22215
CVE-2021-22218
CWE-ID CWE-79
CWE-20
CWE-918
CWE-400
CWE-613
CWE-200
CWE-295
Exploitation vector Network
Public exploit Vulnerability #3 is being exploited in the wild.
Vulnerable software
 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 10 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU54021

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-2021-22213

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 the OAuth flow. 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: 7.10 - 13.12.1

GitLab Enterprise Edition: 7.10.0 - 13.12.0

CPE2.3 External links

https://hackerone.com/reports/1089277
https://gitlab.com/gitlab-org/gitlab/-/issues/300308
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22213.json


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) Input validation error

EUVDB-ID: #VU54085

Risk: Medium

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

CVE-ID: CVE-2021-22181

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. A remote authenticated attacker can create a recursive pipeline relationship to exhaust resources and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 11.8.0 - 13.12.1

GitLab Enterprise Edition: 11.8.0 - 13.12.0

CPE2.3 External links

https://gitlab.com/gitlab-org/gitlab/-/issues/249100
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22181.json


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) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU54086

Risk: High

CVSSv4.0: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:L/SI:L/SA:N/E:A/U:Amber]

CVE-ID: CVE-2021-22214

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

Exploit availability: Yes

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 10.5 - 13.12.1

GitLab Enterprise Edition: 10.5.0 - 13.12.0

CPE2.3 External links

https://gitlab.com/gitlab-org/gitlab/-/issues/322926
https://hackerone.com/reports/1110131
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22214.json


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) Resource exhaustion

EUVDB-ID: #VU54087

Risk: Medium

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

CVE-ID: CVE-2021-22217

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote authenticated attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 0.1.5 - 13.12.1

GitLab Enterprise Edition: 6.2.0 - 13.12.0

CPE2.3 External links

https://gitlab.com/gitlab-org/gitlab/-/issues/300709
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22217.json
https://hackerone.com/reports/1090049


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) Insufficient Session Expiration

EUVDB-ID: #VU54088

Risk: Medium

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

CVE-ID: CVE-2021-22221

CWE-ID: CWE-613 - Insufficient Session Expiration

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to insufficient session expiration issue. A remote non-authenticated attacker can obtain or guess session token and gain unauthorized access to session that belongs to another user.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.9.0 - 13.12.1

GitLab Enterprise Edition: 12.9.0 - 13.12.0

CPE2.3 External links

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22221.json
https://gitlab.com/gitlab-org/gitlab/-/issues/292006


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) Resource exhaustion

EUVDB-ID: #VU54090

Risk: Medium

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

CVE-ID: CVE-2021-22216

CWE-ID: CWE-400 - Resource exhaustion

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to application does not properly control consumption of internal resources. A remote authenticated attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 0.1.5 - 13.12.1

GitLab Enterprise Edition: 6.2.0 - 13.12.0

CPE2.3 External links

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22216.json
https://gitlab.com/gitlab-org/gitlab/-/issues/329890


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) Stored cross-site scripting

EUVDB-ID: #VU54093

Risk: Low

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

CVE-ID: CVE-2021-22220

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 blob viewer of notebooks. A remote attacker 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.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.10.0 - 13.12.1

GitLab Enterprise Edition: 13.10.0 - 13.12.0

CPE2.3 External links

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22220.json
https://hackerone.com/reports/1060114
https://gitlab.com/gitlab-org/gitlab/-/issues/294128


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) Information disclosure

EUVDB-ID: #VU54094

Risk: Low

CVSSv4.0: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-22219

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

Exploit availability: No

Description

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

The vulnerability exists due to the sensitive information is not correctly registered for log masking. A remote administrator can gain unauthorized access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 9.5 - 13.12.1

GitLab Enterprise Edition: 9.5.0 - 13.12.0

CPE2.3 External links

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22219.json
https://gitlab.com/gitlab-org/gitlab/-/issues/296995


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.

9) Information disclosure

EUVDB-ID: #VU54095

Risk: Low

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

CVE-ID: CVE-2021-22215

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

Exploit availability: No

Description

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

The vulnerability exists due to excessive data output by the application. A remote administrator can leak information about the members' on-call rotations in other projects.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 13.11.0 - 13.12.1

GitLab Enterprise Edition: 13.11.0 - 13.12.0

CPE2.3 External links

https://gitlab.com/gitlab-org/gitlab/-/issues/328668
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22215.json


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.

10) Improper Certificate Validation

EUVDB-ID: #VU54096

Risk: Low

CVSSv4.0: 0.4 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-22218

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper handling of x509 certificates. A remote authenticated attacker can spoof author of signed commits. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Gitlab Community Edition: 12.8.0 - 13.12.1

GitLab Enterprise Edition: 12.8.0 - 13.12.0

CPE2.3 External links

https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22218.json
https://gitlab.com/gitlab-org/gitlab/-/issues/297665
https://hackerone.com/reports/1077019


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.



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