SB2020092206 - Multiple vulnerabilities in Jenkins Perfecto plugin

Description

This security bulletin contains information about 2 vulnerabilities.

1) Improper access control (CVE-ID: CVE-2020-2260)

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 attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to the affected plugin does not perform a permission check in a method implementing a connection test. A remote user with Overall/Read permission can connect to an attacker-specified HTTP URL using attacker-specified username and password.

2) OS Command Injection (CVE-ID: CVE-2020-2261)

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation. A remote authenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• http://www.openwall.com/lists/oss-security/2020/09/16/3
• https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1979
• https://www.jenkins.io/security/advisory/2020-09-16/#SECURITY-1980