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CVE-2017-6921— File REST resource does not properly validate

Quick assessment

Affected
Drupal Drupal Core
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.

Drupal是Drupal社区所维护的一套用PHP语言开发的免费、开源的内容管理系统。 Drupal 8.3.4之前的8.x版本中存在安全绕过漏洞。攻击者可利用该漏洞绕过安全限制，执行未授权的访问。

AI Predicted 6.5 Difficulty: Easy EPSS 1.84% · P77
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I. Basic Information for CVE-2017-6921

Vulnerability Information
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Vulnerability Title
File REST resource does not properly validate
Source: CVE Program / CVE List V5
Vulnerability Description
In Drupal 8 prior to 8.3.4; The file REST resource does not properly validate some fields when manipulating files. A site is only affected by this if the site has the RESTful Web Services (rest) module enabled, the file REST resource is enabled and allows PATCH requests, and an attacker can get or register a user account on the site with permissions to upload files and to modify the file resource.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Drupal 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Drupal是Drupal社区所维护的一套用PHP语言开发的免费、开源的内容管理系统。 Drupal 8.3.4之前的8.x版本中存在安全绕过漏洞。攻击者可利用该漏洞绕过安全限制，执行未授权的访问。
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
Drupal Drupal Core Drupal 8 ~ 8.3.4 -

II. Public POCs for CVE-2017-6921

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III. Intelligence Information for CVE-2017-6921

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Vendor Advisories for CVE-2017-6921 (2)

Other References for CVE-2017-6921 (1)

Same Patch Batch · Drupal · 2019-01-15 · 3 CVEs total

CVE-2018-7603 Search Autocomplete
CVE-2017-6924 REST API can bypass comment approval - Access Bypass - Moderately Critical

IV. Related Vulnerabilities

Same product: Drupal Core
Same vendor: Drupal

V. Comments for CVE-2017-6921

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