Multiple vulnerabilities in Jenkins and Jenkins LTS

Published: 2024-08-12 | Updated: 2024-08-30

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2024-43044 CVE-2024-43045
CWE-ID	CWE-284 CWE-264
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	Jenkins Server applications / Application servers Jenkins LTS Server applications / Application servers
Vendor	Jenkins

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control

EUVDB-ID: #VU95780

Risk: High

CVSSv3.1: 8.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2024-43044

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions within the "ClassLoaderProxy#fetchJar" method in the Remoting library. A remote attacker can read arbitrary files on the Jenkins controller file system, leading to arbitrary code execution.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Jenkins: 2.0 - 2.470

Jenkins LTS: 2.7.1 - 2.452.3

External links

http://www.jenkins.io/security/advisory/2024-08-07/#SECURITY-3430

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. However, proof of concept for this vulnerability is available.

2) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU95781

Risk: Medium

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

CVE-ID: CVE-2024-43045

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to application does not perform a permission check in an HTTP endpoint. A remote user can access or change other users' "My Views".