Zero-day vulnerability in Jenkins

LDAP injection

Vulnerability details

Advisory: SB2016111101 - Remote code execution in Jenkins

Vulnerable component: Jenkins

CVE-ID: CVE-2016-9299

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C

CWE-ID: CWE-90 - Improper Neutralization of Special Elements used in an LDAP Query ('LDAP Injection')


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

The weakness exists due to the flaw in the remoting module when handling malicious objects. A remote attacker can transfer a specially crafted serialized Java object to the Jenkins CLI, make Jenkins connect to an attacker-controlled LDAP server, bypass existing protection mechanisms and execute arbitrary code on vulnerable system.

Successful exploitation of the vulnerability results in arbitrary code excution on the vulnerable system.

Note: the vulnerability was being actively exploited.