Vulnerabilities > CVE-2019-7838 - Unrestricted Upload of File with Dangerous Type vulnerability in Adobe Coldfusion 11.0/2016/2018
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
ColdFusion versions Update 3 and earlier, Update 10 and earlier, and Update 18 and earlier have a file extension blacklist bypass vulnerability. Successful exploitation could lead to arbitrary code execution.
Vulnerable Configurations
| Part | Description | Count |
|---|---|---|
| Application | 34 |
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Accessing Functionality Not Properly Constrained by ACLs In applications, particularly web applications, access to functionality is mitigated by the authorization framework, whose job it is to map ACLs to elements of the application's functionality; particularly URL's for web apps. In the case that the administrator failed to specify an ACL for a particular element, an attacker may be able to access it with impunity. An attacker with the ability to access functionality not properly constrained by ACLs can obtain sensitive information and possibly compromise the entire application. Such an attacker can access resources that must be available only to users at a higher privilege level, can access management sections of the application or can run queries for data that he is otherwise not supposed to.
- Privilege Abuse An adversary is able to exploit features of the target that should be reserved for privileged users or administrators but are exposed to use by lower or non-privileged accounts. Access to sensitive information and functionality must be controlled to ensure that only authorized users are able to access these resources. If access control mechanisms are absent or misconfigured, a user may be able to access resources that are intended only for higher level users. An adversary may be able to exploit this to utilize a less trusted account to gain information and perform activities reserved for more trusted accounts. This attack differs from privilege escalation and other privilege stealing attacks in that the adversary never actually escalates their privileges but instead is able to use a lesser degree of privilege to access resources that should be (but are not) reserved for higher privilege accounts. Likewise, the adversary does not exploit trust or subvert systems - all control functionality is working as configured but the configuration does not adequately protect sensitive resources at an appropriate level.
Nessus
| NASL family | Windows |
| NASL id | COLDFUSION_WIN_APSB19-27.NASL |
| description | The version of Adobe ColdFusion installed on the remote Windows host is prior to 11.x update 19, 2016.x update 11, or 2018.x update 4. It is, therefore, affected by multiple vulnerabilities as referenced in the APSB19-27 advisory. - File extension blacklist bypass potentially leading to Arbitrary code execution (CVE-2019-7838) - Command Injection potentially leading to Arbitrary code execution (CVE-2019-7839) - Deserialization of untrusted data potentially leading to Arbitrary code execution (CVE-2019-7840) Note that Nessus has not tested for this issue but has instead relied only on the application |
| last seen | 2020-06-01 |
| modified | 2020-06-02 |
| plugin id | 125880 |
| published | 2019-06-14 |
| reporter | This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
| source | https://www.tenable.com/plugins/nessus/125880 |
| title | Adobe ColdFusion < 11.x < 11u19 / 2016.x < 2016u11 / 2018.x < 2018u4 Multiple Vulnerabilities (APSB19-27) |
| code | |
The Hacker News
| id | THN:C9C46E3C63DA812F6C22E297AB5F14C3 |
| last seen | 2019-06-11 |
| modified | 2019-06-11 |
| published | 2019-06-11 |
| reporter | The Hacker News |
| source | https://thehackernews.com/2019/06/adobe-patch-june.html |
| title | Adobe Issues Critical Patches for ColdFusion, Flash Player, Campaign |