#VU57148 Path traversal in Jenkins and Jenkins LTS


Published: 2021-10-08

Vulnerability identifier: #VU57148

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21683

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

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

Vendor: Jenkins

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences on Windows. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Jenkins: 2.0 - 2.314

Jenkins LTS: 2.7.1 - 2.303.1


External links
http://www.jenkins.io/security/advisory/2021-10-06/#SECURITY-2481
http://www.openwall.com/lists/oss-security/2021/10/06/1


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.


Latest bulletins with this vulnerability