SB2020031138 - Multiple vulnerabilities in Jenkins Mac Plugin
Published: March 11, 2020
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2020-2146)
CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
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 use SSH host key validation when connecting to Mac Cloud host. A remote attacker can perform a man-in-the-middle attack to intercept these connections to build agents.
2) Cross-site request forgery (CVE-ID: CVE-2020-2147)
CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to perform cross-site request forgery attacks.
The vulnerability exists due to the form validation method does not require POST requests. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.
3) Improper access control (CVE-ID: CVE-2020-2148)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.
The vulnerability exists due to the affected plugin does not perform permission checks on a method implementing form validation. A remote user with Overall/Read access can connect to an attacker-specified SSH host using attacker-specified credentials IDs obtained through another method, capturing credentials stored in Jenkins.
Remediation
Install update from vendor's website.