Vulnerability identifier: #VU51817

Vulnerability risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-21634

CWE-ID: CWE-312

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Jabber (XMPP) notifier and control
Web applications / Modules and components for CMS

Vendor: Jenkins

Description

The vulnerability allows a local user to view the password on the target system.

The vulnerability exists due to the affected software stores passwords unencrypted in its global configuration file "hudson.plugins.jabber.im.transport.JabberPublisher.xml" on the Jenkins controller. A local user with access to the Jenkins controller file system can obtain credentials.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Jabber (XMPP) notifier and control: 0.5 - 1.41

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External links
http://www.openwall.com/lists/oss-security/2021/03/30/1
http://www.jenkins.io/security/advisory/2021-03-30/#SECURITY-2162

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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.