Very High
CVE-2024-20767
CVE-2024-20767
Description
ColdFusion versions 2023.6, 2021.12 and earlier are affected by an Improper Access Control vulnerability that could lead to arbitrary file system read. An attacker could leverage this vulnerability to bypass security measures and gain unauthorized access to sensitive files and perform arbitrary file system write. Exploitation of this issue does not require user interaction.
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Technical Analysis
CVE-2024-20767 highlights a vulnerability in a ColdFusion application, specifically within a server management component (/CFIDE/adminapi/_servermanager/servermanager.cfc). This component, intended for managing server operations, can be manipulated to execute unauthorized actions due to improper security checks on user access levels.
The vulnerability arises because the application fails to adequately verify the permissions of certain classes, allowing a class with a specific access level (identified as “3”) to bypass security measures. Attackers can exploit this oversight by dissecting the application’s files to target the getHeartBeat class, which is not properly secured. Once access is gained, attackers can call internal methods that should be restricted, leading to unauthorized actions such as reading sensitive files or downloading data dumps from the server.
This issue is particularly concerning because it allows attackers to use a unique identifier (UUID) generated by the application to fake authorization, gaining access to a servlet (PMSGenericServlet) meant for privileged operations. The exploitation of this servlet could lead to further unauthorized activities, such as reading or altering files on the server, by manipulating parameters like the username and filename in requests.
From an example at http://jeva.cc/2973.html, a POC would look like:
Get /pms?module=logging&file_name=../../../../../../../etc/passwd&number_of_lines=10000
CVSS V3 Severity and Metrics
General Information
Vendors
- Adobe
Products
- ColdFusion
Metasploit Modules
References
Exploit
A PoC added here by the AKB Worker must have at least 2 GitHub stars.
