Vulnerabilities > CVE-2016-8643 - Improper Access Control vulnerability in Moodle
Attack vector
NETWORK Attack complexity
LOW Privileges required
SINGLE Confidentiality impact
NONE Integrity impact
PARTIAL Availability impact
NONE Summary
In Moodle 2.x and 3.x, non-admin site managers may accidentally edit admins via web services.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Embedding Scripts within Scripts An attack of this type exploits a programs' vulnerabilities that are brought on by allowing remote hosts to execute scripts. The attacker leverages this capability to execute scripts to execute his/her own script by embedding it within other scripts that the target software is likely to execute. The attacker must have the ability to inject script into script that is likely to be executed. If this is done, then the attacker can potentially launch a variety of probes and attacks against the web server's local environment, in many cases the so-called DMZ, back end resources the web server can communicate with, and other hosts. With the proliferation of intermediaries, such as Web App Firewalls, network devices, and even printers having JVMs and Web servers, there are many locales where an attacker can inject malicious scripts. Since this attack pattern defines scripts within scripts, there are likely privileges to execute said attack on the host. Of course, these attacks are not solely limited to the server side, client side scripts like Ajax and client side JavaScript can contain malicious scripts as well. In general all that is required is for there to be sufficient privileges to execute a script, but not protected against writing.
- Signature Spoofing by Key Theft An attacker obtains an authoritative or reputable signer's private signature key by theft and then uses this key to forge signatures from the original signer to mislead a victim into performing actions that benefit the attacker.
Nessus
| NASL family | FreeBSD Local Security Checks |
| NASL id | FREEBSD_PKG_F6565FBFAB9E11E6AE1B002590263BF5.NASL |
| description | Marina Glancy reports : - MSA-16-0023: Question engine allows access to files that should not be available - MSA-16-0024: Non-admin site managers may accidentally edit admins via web services - MSA-16-0025: Capability to view course notes is checked in the wrong context - MSA-16-0026: When debugging is enabled, error exceptions returned from webservices could contain private data |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 94905 |
| published | 2016-11-16 |
| reporter | This script is Copyright (C) 2016-2018 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/94905 |
| title | FreeBSD : moodle -- multiple vulnerabilities (f6565fbf-ab9e-11e6-ae1b-002590263bf5) |
| code | |