SB2019102209 - Multiple vulnerabilities in CRX Content Package Deployer plugin for Jenkins

Description

This security bulletin contains information about 3 vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2019-10439)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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 gain access to potentially sensitive information.

The vulnerability exists due to missing permission check in various "doFillCredentialsIdItems" methods. A remote authenticated attacker with with Overall/Read permission can enumerate credentials ID of credentials stored in Jenkins.

2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2019-10438)

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:L/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 missing permission checks on a method implementing form validation. A remote authenticated attacker can capture credentials stored in Jenkins.

3) Cross-site request forgery (CVE-ID: CVE-2019-10437)

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 user with Overall/Read access to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Remediation

Install update from vendor's website.

References

• https://jenkins.io/security/advisory/2019-10-16/#SECURITY-1006%20(2)
• https://jenkins.io/security/advisory/2019-10-16/