Vulnerability identifier: #VU80942

Vulnerability risk: Low

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

CVE-ID: CVE-2023-43498

CWE-ID: CWE-276

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Jenkins
Server applications / Application servers
Jenkins LTS
Server applications / Application servers

Vendor: Jenkins

Description

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to the affected plugin creates the temporary file in the system temporary directory with the default permissions for newly created files within the Jenkins API "MultipartFormDataParser". A local user can read and write the file before it is used.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Jenkins: 1 - 240

Jenkins LTS: 1.409.1 - 2.414.1

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External links
http://www.jenkins.io/security/advisory/2023-09-20/#SECURITY-3073
http://www.openwall.com/lists/oss-security/2023/09/20/5

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.