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CloudBees Jenkins 'Java Deserialization' Remote Code Execution Vulnerability (Windows)

Information

Severity

Severity

High

Family

Family

Web application abuses

CVSSv2 Base

CVSSv2 Base

7.5

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Solution Type

Solution Type

Vendor Patch

Created

Created

7 years ago

Modified

Modified

5 years ago

Summary

This host is installed with CloudBees Jenkins and is prone to a remote code execution vulnerability.

Insight

Insight

The flaw is due to an Jenkins allowing to transfer a serialized Java object to the Jenkins CLI, making Jenkins connect to an attacker-controlled LDAP server, which in turn can send a serialized payload leading to code execution, bypassing existing protection mechanisms.

Affected Software

Affected Software

CloudBees Jenkins LTS 2.19.2 and prior, Jenkins 2.31 and prior.

Detection Method

Detection Method

Checks if a vulnerable version is present on the target host.

Solution

Solution

Upgrade to CloudBees Jenkins to 2.32 or later / Jenkins LTS to 2.19.3 or later.

Common Vulnerabilities and Exposures (CVE)