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CVE-2023-28110— JumpServer Koko vulnerable to Command Injection for Kubernetes Connection

Quick assessment

Affected
jumpserver jumpserver
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Jumpserver是中国杭州飞致云信息科技有限公司的一款开源堡垒机。 Jumpserver 2.28.8之前版本存在命令注入漏洞。攻击者利用该漏洞使用非法token通过Koko连接Kubernetes集群，导致执行危险命令，扰乱Koko容器环境，影响正常使用。

CVSS 5.7 · Medium EPSS 0.85% · P57

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2023-28110

Vulnerability Information
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Vulnerability Title
JumpServer Koko vulnerable to Command Injection for Kubernetes Connection
Source: CVE Program / CVE List V5
Vulnerability Description
Jumpserver is a popular open source bastion host, and Koko is a Jumpserver component that is the Go version of coco, refactoring coco's SSH/SFTP service and Web Terminal service. Prior to version 2.28.8, using illegal tokens to connect to a Kubernetes cluster through Koko can result in the execution of dangerous commands that may disrupt the Koko container environment and affect normal usage. The vulnerability has been fixed in v2.28.8.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在命令中使用的特殊元素转义处理不恰当(命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
Jumpserver 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Jumpserver是中国杭州飞致云信息科技有限公司的一款开源堡垒机。 Jumpserver 2.28.8之前版本存在命令注入漏洞。攻击者利用该漏洞使用非法token通过Koko连接Kubernetes集群，导致执行危险命令，扰乱Koko容器环境，影响正常使用。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
jumpserver jumpserver < 2.28.8 -

II. Public POCs for CVE-2023-28110

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III. Intelligence Information for CVE-2023-28110

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Vendor Advisories for CVE-2023-28110 (1)

Other References for CVE-2023-28110 (1)

IV. Related Vulnerabilities

Same product: jumpserver
Same vendor: jumpserver
Same weakness: CWE-77

V. Comments for CVE-2023-28110

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