Drupal 7.x < 7.56 / 8.x < 8.3.4 Multiple Vulnerabilities (SA-CORE-2017-003)

High Nessus Plugin ID 101063


A PHP application running on the remote web server is affected by multiple vulnerabilities.


According to its self-reported version, the instance of Drupal running on the remote web server is 7.x prior to 7.56 or 8.x prior to 8.3.4.
It is, therefore, affected by multiple vulnerabilities :

- A flaw exists in the PECL YAML parser due to unsafe handling of PHP objects during certain operations. An unauthenticated, remote attacker can exploit this to execute arbitrary code. (CVE-2017-6920)

- A flaw exists in the file REST resource due to improper validation of user-supplied input to multiple fields when manipulating files. An unauthenticated, remote attacker can exploit this to have an unspecified impact on integrity. Note that a site is only affected by this issue if it has the RESTful Web Services (rest) module enabled, the file REST resource is enabled and allows PATCH requests, and the attacker can get or register a user account on the site with permissions to upload files and to modify the file resource. (CVE-2017-6921)

- An information disclosure vulnerability exists due to a failure to ensure that private files that have been uploaded by an anonymous user but not permanently attached to content on the site are only visible to the anonymous user who uploaded them instead of all anonymous users. An unauthenticated, remote attacker can exploit this to disclose the files of other anonymous users. (CVE-2017-6922)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.


Upgrade to Drupal version 7.56 / 8.3.4 or later.

See Also




Plugin Details

Severity: High

ID: 101063

File Name: drupal_8_3_4.nasl

Version: 1.9

Type: remote

Family: CGI abuses

Published: 2017/06/27

Updated: 2019/11/13

Dependencies: 18638

Configuration: Enable paranoid mode

Risk Information

Risk Factor: High

CVSS Score Source: CVE-2017-6920

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:drupal:drupal

Required KB Items: installed_sw/Drupal, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/06/21

Vulnerability Publication Date: 2017/06/21

Reference Information

CVE: CVE-2017-6920, CVE-2017-6921, CVE-2017-6922

BID: 99211, 99219, 99222