Jenkins Enterprise and Operations Center < 2.249.31.0.1 / 2.277.3.1 DoS (CloudBees Security Advisory 2021-04-20)

high Nessus Plugin ID 155587

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Synopsis

A job scheduling and management system hosted on the remote web server is affected by a denial of service vulnerability.

Description

The version of Jenkins Enterprise or Jenkins Operations Center running on the remote web server is 2.249.x prior to 2.249.31.0.1, or 2.x prior to 2.277.3.1. It is, therefore, affected by a denial of service vulnerability due to an issue with Winstone-Jetty. An unauthenticated, remote attacker can exploit this by sending a large invalid SSL/TLS frame, to cause CPU usage to hit 100% and cause the system to stop responding.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade Jenkins Enterprise or Jenkins Operations Center to version 2.249.31.0.1, 2.277.3.1 or later.

Plugin Details

Severity: High

ID: 155587

File Name: cloudbees_security_advisory_2021-04-20.nasl

Version: 1.5

Type: combined

Agent: windows, macosx, unix

Family: CGI abuses

Published: 11/18/2021

Updated: 6/4/2024

Configuration: Enable thorough checks

Supported Sensors: Nessus Agent, Nessus

Enable CGI Scanning: true

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2021-28165

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:cloudbees:jenkins

Required KB Items: installed_sw/Jenkins

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/20/2021

Vulnerability Publication Date: 4/20/2021

Reference Information

CVE: CVE-2021-28165

Detections

Analytics