CVE-2020-25623 : Security Advisory and Response

Erlang/OTP 22.3.x before 22.3.4.6 and 23.x before 23.1 allows Directory Traversal. An attacker can send a crafted HTTP request to read arbitrary files, if httpd in the inets application is used.

Understanding CVE-2020-25623

This CVE involves a vulnerability in Erlang/OTP versions that could lead to Directory Traversal.

What is CVE-2020-25623?

CVE-2020-25623 is a security vulnerability in Erlang/OTP versions 22.3.x before 22.3.4.6 and 23.x before 23.1 that enables Directory Traversal through a specially crafted HTTP request.

The Impact of CVE-2020-25623

The vulnerability allows an attacker to read arbitrary files, potentially leading to unauthorized access to sensitive information.

Technical Details of CVE-2020-25623

This section provides more in-depth technical insights into the CVE.

Vulnerability Description

The vulnerability in Erlang/OTP versions allows for Directory Traversal, enabling attackers to access files beyond the intended directory.

Affected Systems and Versions

Erlang/OTP 22.3.x before 22.3.4.6
Erlang/OTP 23.x before 23.1

Exploitation Mechanism

Attackers can exploit this vulnerability by sending a specifically crafted HTTP request when using httpd in the inets application.

Mitigation and Prevention

Protecting systems from CVE-2020-25623 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update Erlang/OTP to version 22.3.4.6 or 23.1 to mitigate the vulnerability.
Avoid using httpd in the inets application if possible.

Long-Term Security Practices

Regularly monitor and update software to patch known vulnerabilities.
Implement access controls and restrictions to limit potential attack surfaces.

Patching and Updates

Ensure timely installation of security patches and updates to prevent exploitation of known vulnerabilities.