Multiple vulnerabilities in Jenkins GitLab Branch Source plugin



Published: 2024-01-25
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2024-23901
CVE-2024-23903
CVE-2024-23902
CWE-ID CWE-284
CWE-200
CWE-352
Exploitation vector Network
Public exploit N/A
Vulnerable software
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GitLab Branch Source
Web applications / Modules and components for CMS

Vendor Jenkins

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Improper access control

EUVDB-ID: #VU85794

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-23901

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 the affected plugin unconditionally discovers projects that are shared with the configured owner group. A remote attacker can configure and share a project, resulting in a crafted Pipeline being built by Jenkins during the next scan of the group.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Branch Source: 684.vea_fa_7c1e2fe3

External links

http://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3040
http://www.openwall.com/lists/oss-security/2024/01/24/6


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) Information disclosure

EUVDB-ID: #VU85796

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-23903

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 the affected plugin uses a non-constant time comparison function when checking whether the provided and expected webhook token are equal. A remote attacker can use statistical methods to obtain a valid webhook token.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GitLab Branch Source: 684.vea_fa_7c1e2fe3

External links

http://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-2871
http://www.openwall.com/lists/oss-security/2024/01/24/6


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) Cross-site request forgery

EUVDB-ID: #VU85795

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-2024-23902

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install update from vendor's website.

Vulnerable software versions

GitLab Branch Source: 684.vea_fa_7c1e2fe3

External links

http://www.jenkins.io/security/advisory/2024-01-24/#SECURITY-3251
http://www.openwall.com/lists/oss-security/2024/01/24/6


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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