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CVE-2023-46738— Authenticated users can crash the CubeFS servers with maliciously crafted requests

Quick assessment

Affected
cubefs cubefs
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.

CubeFS是CubeFS个人开发者的一种云原生文件存储。 CubeFS 3.3.1之前版本存在安全漏洞，该漏洞源于对传入 HTTP 请求的处理不当。攻击者利用该漏洞可以控制 ObjectNode 分配的内存量。

CVSS 6.5 · Medium EPSS 0.56% · P45
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I. Basic Information for CVE-2023-46738

Vulnerability Information
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Vulnerability Title
Authenticated users can crash the CubeFS servers with maliciously crafted requests
Source: CVE Program / CVE List V5
Vulnerability Description
CubeFS is an open-source cloud-native file storage system. A security vulnerability was found in CubeFS HandlerNode in versions prior to 3.3.1 that could allow authenticated users to send maliciously-crafted requests that would crash the ObjectNode and deny other users from using it. The root cause was improper handling of incoming HTTP requests that could allow an attacker to control the ammount of memory that the ObjectNode would allocate. A malicious request could make the ObjectNode allocate more memory that the machine had available, and the attacker could exhaust memory by way of a single malicious request. An attacker would need to be authenticated in order to invoke the vulnerable code with their malicious request and have permissions to delete objects. In addition, the attacker would need to know the names of existing buckets of the CubeFS deployment - otherwise the request would be rejected before it reached the vulnerable code. As such, the most likely attacker is an inside user or an attacker that has breached the account of an existing user in the cluster. The issue has been patched in v3.3.1. There is no other mitigation besides upgrading.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
不加限制或调节的资源分配
Source: CVE Program / CVE List V5
Vulnerability Title
CubeFS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CubeFS是CubeFS个人开发者的一种云原生文件存储。 CubeFS 3.3.1之前版本存在安全漏洞，该漏洞源于对传入 HTTP 请求的处理不当。攻击者利用该漏洞可以控制 ObjectNode 分配的内存量。
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
cubefs cubefs < 3.3.1 -

II. Public POCs for CVE-2023-46738

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III. Intelligence Information for CVE-2023-46738

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Patches & Fixes for CVE-2023-46738 (1)

Vendor Advisories for CVE-2023-46738 (1)

Same Patch Batch · cubefs · 2024-01-03 · 5 CVEs total

CVE-2023-46739 6.5 MEDIUM Timing attack can leak user passwords
CVE-2023-46740 6.5 MEDIUM Insecure random string generator used for sensitive data
CVE-2023-46741 4.8 MEDIUM CubeFS leaks magic secret key when starting Blobstore access service
CVE-2023-46742 4.8 MEDIUM CubeFS leaks users key in logs

IV. Related Vulnerabilities

Same product: cubefs
Same vendor: cubefs
Same weakness: CWE-770

V. Comments for CVE-2023-46738

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