Improper Authentication in Jenkins and Jenkins LTS - CVE-2020-2099
Published: January 30, 2020
Vulnerability identifier: #VU24758
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-2099
CWE-ID: CWE-287
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Jenkins
Affected software:
Jenkins
Jenkins LTS
Jenkins
Jenkins LTS
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass authentication process.
The vulnerability exists due to the affected software improperly reuses encryption key parameters in the Inbound TCP Agent Protocol/3. A remote attacker with knowledge of agent names can obtain the connection secrets for those agents, which can be used to connect to Jenkins, impersonating those agents.
How to mitigate CVE-2020-2099
Install updates from vendor's website.