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CVE-2024-38353— CodiMD - Missing Image Access Controls and Unauthorized Image Access

Quick assessment

Affected
hackmdio codimd
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.

CodiMD是HackMD开源的一个实时协作笔记应用程序。 CodiMD 2.5.3版本存在安全漏洞，该漏洞源于缺少身份验证和访问控制漏洞，允许未经身份验证的攻击者未经授权访问上传的图像数据。

CVSS 5.3 · Medium EPSS 1.15% · P66

Public Exploits 1

Nuclei · 1 CVE-2024-38353.yaml [template]
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I. Basic Information for CVE-2024-38353

Vulnerability Information
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Vulnerability Title
CodiMD - Missing Image Access Controls and Unauthorized Image Access
Source: CVE Program / CVE List V5
Vulnerability Description
CodiMD allows realtime collaborative markdown notes on all platforms. CodiMD before 2.5.4 is missing authentication and access control vulnerability allowing an unauthenticated attacker to gain unauthorised access to image data uploaded to CodiMD. CodiMD does not require valid authentication to access uploaded images or to upload new image data. An attacker who can determine an uploaded image's URL can gain unauthorised access to uploaded image data. Due to the insecure random filename generation in the underlying Formidable library, an attacker can determine the filenames for previously uploaded images and the likelihood of this issue being exploited is increased. This vulnerability is fixed in 2.5.4.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用具有密码学弱点缺陷的PRNG
Source: CVE Program / CVE List V5
Vulnerability Title
CodiMD 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
CodiMD是HackMD开源的一个实时协作笔记应用程序。 CodiMD 2.5.3版本存在安全漏洞，该漏洞源于缺少身份验证和访问控制漏洞，允许未经身份验证的攻击者未经授权访问上传的图像数据。
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
hackmdio codimd < 2.5.4 -

II. Public POCs for CVE-2024-38353

# POC Description Source Link Shenlong Link
1 CodiMD does not require valid authentication to access uploaded images or to upload new image data. An attacker who can determine an uploaded image's URL can gain unauthorised access to uploaded image data. Due to the insecure random filename generation in the underlying Formidable library, an attacker can determine the filenames for previously uploaded images and the likelihood of this issue being exploited is increased. https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2024/CVE-2024-38353.yaml POC Details
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III. Intelligence Information for CVE-2024-38353

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Vendor Advisories for CVE-2024-38353 (1)

IV. Related Vulnerabilities

Same product: codimd
Same vendor: hackmdio
Same weakness: CWE-338

V. Comments for CVE-2024-38353

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