SB2019112210 - Multiple vulnerabilities in Jenkins Google Compute Engine Plugin
Published: November 22, 2019
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Man-in-the-Middle (MitM) attack (CVE-ID: CVE-2019-16546)
CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/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 a man-in-the-middle (MitM) attack.
The vulnerability exists due to the affected plugin does not use SSH host key verification when connecting to VMs launched by the plugin. A remote attacker can perform a man-in-the-middle attack to intercept these connections to attacker-specified build agents without warning.
2) Cross-site request forgery (CVE-ID: CVE-2019-16548)
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 affected plugin does not require POST requests on an API endpoint. 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, such as provision new agents.
3) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-16547)
CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a remote attacker to escalate privileges on the system.
The vulnerability exists due to the affected plugin does not verify permissions on multiple auto-complete API endpoints. A remote authenticated attacker with Overall/Read permissions can view various metadata about the running cloud environment.
Remediation
Install update from vendor's website.