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CVE-2021-21287— Server-Side Request Forgery in MinIO Browser API

Quick assessment

Affected
minio minio
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Minio MinIO是美国MinIO（Minio）公司的一款开源的对象存储服务器。该产品支持构建用于机器学习、分析和应用程序数据工作负载的基础架构。 MinIO 存在代码问题漏洞，攻击者可利用该漏洞通过提供一个完全不同的URL或操纵URL的构建方式(路径遍历等)来修改对该功能的调用。

CVSS 7.7 · High EPSS 24.78% · P98

Public Exploits 1

Nuclei · 1 CVE-2021-21287.yaml [template]
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I. Basic Information for CVE-2021-21287

Vulnerability Information
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Vulnerability Title
Server-Side Request Forgery in MinIO Browser API
Source: CVE Program / CVE List V5
Vulnerability Description
MinIO is a High Performance Object Storage released under Apache License v2.0. In MinIO before version RELEASE.2021-01-30T00-20-58Z there is a server-side request forgery vulnerability. The target application may have functionality for importing data from a URL, publishing data to a URL, or otherwise reading data from a URL that can be tampered with. The attacker modifies the calls to this functionality by supplying a completely different URL or by manipulating how URLs are built (path traversal etc.). In a Server-Side Request Forgery (SSRF) attack, the attacker can abuse functionality on the server to read or update internal resources. The attacker can supply or modify a URL which the code running on the server will read or submit data, and by carefully selecting the URLs, the attacker may be able to read server configuration such as AWS metadata, connect to internal services like HTTP enabled databases, or perform post requests towards internal services which are not intended to be exposed. This is fixed in version RELEASE.2021-01-30T00-20-58Z, all users are advised to upgrade. As a workaround you can disable the browser front-end with "MINIO_BROWSER=off" environment variable.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
Minio MinIO 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Minio MinIO是美国MinIO（Minio）公司的一款开源的对象存储服务器。该产品支持构建用于机器学习、分析和应用程序数据工作负载的基础架构。 MinIO 存在代码问题漏洞，攻击者可利用该漏洞通过提供一个完全不同的URL或操纵URL的构建方式(路径遍历等)来修改对该功能的调用。
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)

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Affected Products

Vendor Product Affected Versions CPE Subscribe
minio minio < RELEASE.2021-01-30T00-20-58Z -

II. Public POCs for CVE-2021-21287

# POC Description Source Link Shenlong Link
1 MinIO Browser API before version RELEASE.2021-01-30T00-20-58Z contains a server-side request forgery vulnerability. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-21287.yaml POC Details
2 None https://github.com/Threekiii/Awesome-POC/blob/master/%E4%BA%91%E5%AE%89%E5%85%A8%E6%BC%8F%E6%B4%9E/MinIO%20SSRF%20%E6%BC%8F%E6%B4%9E%20CVE-2021-21287.md POC Details
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III. Intelligence Information for CVE-2021-21287

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Patches & Fixes for CVE-2021-21287 (1)

Vendor Advisories for CVE-2021-21287 (1)

Other References for CVE-2021-21287 (1)

IV. Related Vulnerabilities

Same product: minio
Same vendor: minio
Same weakness: CWE-918

V. Comments for CVE-2021-21287

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