Cross-site scripting in jenkins (Alpine package)

1) Cross-site scripting

EUVDB-ID: #VU33180

Risk: Low

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

CVE-ID: CVE-2019-1003050

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The vulnerability allows a remote authenticated user to read and manipulate data.

The f:validateButton form control for the Jenkins UI did not properly escape job URLs in Jenkins 2.171 and earlier and Jenkins LTS 2.164.1 and earlier, resulting in a cross-site scripting (XSS) vulnerability exploitable by users with the ability to control job names.

Mitigation

Install update from vendor's website.

Vulnerable software versions

jenkins (Alpine package): 2.73.3-r0 - 2.150.3-r0

CPE2.3

• cpe:2.3:o:alpine:jenkins_alpine_package:2.73.3-r0:*:*:*:*:alpine_linux:*:3.7
• cpe:2.3:o:alpine:jenkins_alpine_package:2.89.2-r0:*:*:*:*:alpine_linux:*:3.7
• cpe:2.3:o:alpine:jenkins_alpine_package:2.89.3-r0:*:*:*:*:alpine_linux:*:3.7

External links

https://git.alpinelinux.org/aports/commit/?id=4d6ca10f8ba57b07211d97a693e2c289bd1a9587
https://git.alpinelinux.org/aports/commit/?id=340842e8e1e352b407faa787d4fc974e58001d54

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.