SB2018021415 - Information disclosure in Jenkins CI

Description

This security bulletin contains information about 2 vulnerabilities.

1) Information disclosure (CVE-ID: CVE-2018-6356)

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CVSSv4: 5.3 [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]

The vulnerability allows a remote authenticated attacker to obtain potentially sensitive information on the target system.

The vulnerability exists in the Extended Choice Parameter plug-in for Jenkins due to insufficient security restrictions. A remote attacker can use the Extended Choice Parameter plug-in, trigger path traversal and access potentially sensitive information.

2) Information disclosure (CVE-ID: CVE-2018-1000068)

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

CVSSv4: 5.3 [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]

The vulnerability allows a remote authenticated attacker to obtain potentially sensitive information on the target system.

The weakness exists due to improper security restrictions. A remote attacker can bypass security restrictions, gain access to potentially sensitive information, such as plug-in resource files in META-INF and WEB-INF directories, including JAR files.

Remediation

Install update from vendor's website.

References

• https://jenkins.io/download/
• https://jenkins.io/security/advisory/2018-02-14/