Improper Certificate Validation in Mailer - CVE-2020-2252
Published: September 16, 2020 / Updated: September 21, 2020
Vulnerability identifier: #VU46877
CSH Severity: Medium
CVSS v4: 6.3 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-2252
CWE-ID: CWE-295
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.
The vulnerability exists due to the affected plugin does not perform hostname validation when connecting to the configured SMTP server. A remote attacker can perform a MitM attack and intercept these connections.
Affected software
Mailer
Red Hat OpenShift Container Platform
jenkins-2-plugins (Red Hat package)
Red Hat OpenShift Container Platform
jenkins-2-plugins (Red Hat package)
How to mitigate CVE-2020-2252
Install updates from vendor's website.
Mailer - update to 1.32.1
jenkins-2-plugins (Red Hat package) - update to 3.11.1603460090-1.el7
jenkins-2-plugins (Red Hat package) - update to 3.11.1603460090-1.el7