Plattform
ruby
Komponente
cassandra-web
Behoben in
0.5.1
CVE-2020-36939 is a directory traversal vulnerability discovered in Cassandra Web version 0.5.0. This flaw allows unauthenticated attackers to read arbitrary files on the system, potentially exposing sensitive information like system configuration files and database credentials. The vulnerability stems from a disabled Rack::Protection module, which should have prevented path traversal attacks. A fix is available via an updated version of Cassandra Web.
The primary impact of CVE-2020-36939 is the unauthorized disclosure of sensitive information. An attacker exploiting this vulnerability could read arbitrary files on the server hosting Cassandra Web. This includes critical system files like /etc/passwd, which contains user account information, and potentially Cassandra database credentials. Successful exploitation could lead to complete system compromise, allowing attackers to gain persistent access and control over the Cassandra cluster. The ability to read database credentials would enable attackers to directly access and manipulate sensitive data stored within Cassandra.
CVE-2020-36939 was published on January 27, 2026. There is no indication of this vulnerability being actively exploited or listed on CISA KEV. Public proof-of-concept exploits are not widely available, but the vulnerability's nature makes it relatively straightforward to exploit given the disabled Rack::Protection module. The ease of exploitation, combined with the potential for significant data exposure, warrants careful attention and prompt remediation.
Organizations running Cassandra Web version 0.5.0, particularly those with misconfigured deployments where the Rack::Protection module is disabled, are at significant risk. Shared hosting environments where Cassandra Web is deployed alongside other applications are also vulnerable, as an attacker could potentially exploit this vulnerability to gain access to the entire hosting environment.
• ruby / web:
# Check for suspicious file access attempts in Cassandra Web logs
# Look for patterns like '../' or '..\'• generic web:
# Check for directory listing exposure
curl -I <cassandra_web_url>/..disclosure
Exploit-Status
EPSS
0.66% (71% Perzentil)
CISA SSVC
CVSS-Vektor
The primary mitigation for CVE-2020-36939 is to upgrade Cassandra Web to a patched version. Since a specific fixed version isn't provided, it's crucial to consult the Cassandra Web project's release notes for the latest secure release. As a temporary workaround, ensure the Rack::Protection module is enabled within Cassandra Web's configuration. This module provides protection against path traversal attacks. Monitor access logs for suspicious file access attempts, particularly those involving directory traversal sequences (e.g., ../).
Actualice a una versión corregida de Cassandra Web que solucione la vulnerabilidad de recorrido de directorios. Verifique la documentación del proyecto o el repositorio de GitHub para obtener información sobre las versiones disponibles y las instrucciones de actualización. Como no hay una versión corregida disponible, considere deshabilitar o eliminar el componente Cassandra Web hasta que se publique una actualización.
Schwachstellenanalysen und kritische Warnungen direkt in deinen Posteingang.
CVE-2020-36939 is a directory traversal vulnerability in Cassandra Web 0.5.0 that allows attackers to read arbitrary files by manipulating path traversal parameters due to a disabled Rack::Protection module.
If you are running Cassandra Web version 0.5.0 and the Rack::Protection module is disabled, you are likely affected by this vulnerability.
Upgrade to a patched version of Cassandra Web. Until a patched version is available, disable the Cassandra Web interface or implement strict input validation.
There is no current evidence of active exploitation, but the vulnerability's ease of exploitation makes it a potential target.
Refer to the Apache Cassandra project website for official advisories and updates related to CVE-2020-36939.
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