SB2020050723 - Multiple vulnerabilities in Jenkins Amazon EC2 plugin

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Main Vulnerability Database SB2020050723

SB2020050723 - Multiple vulnerabilities in Jenkins Amazon EC2 plugin

Published: May 7, 2020

Security Bulletin ID SB2020050723
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Improper Authorization (CVE-ID: CVE-2020-2188)

CWE-ID: CWE-285 - Improper Authorization

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 user to bypass authorization checks.

The vulnerability exists due to the affected plugin performs improper permission checks when providing a list of applicable credentials IDs to allow users configuring the plugin to select the one to use. A remote authenticated attacker with Overall/Read permission can get a list of valid credentials IDs.


2) Man-in-the-Middle (MitM) attack (CVE-ID: CVE-2020-2187)

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:N/VC:L/VI:L/VA:L/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 unconditionally accepts self-signed HTTPS certificates and does not perform hostname validation when connecting to Windows agents. A remote attacker can perform a man-in-the-middle attack and intercept these connections to build agents.


3) Cross-site request forgery (CVE-ID: CVE-2020-2186)

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 insufficient validation of the HTTP request origin. 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.


4) Man-in-the-Middle (MitM) attack (CVE-ID: CVE-2020-2185)

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:N/VC:L/VI:L/VA:L/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 agents. A remote attacker can perform a man-in-the-middle attack and intercept these connections to build agents.


Remediation

Install update from vendor's website.

References