Tag OpenSSL

Unveiling the Secrets: OpenSSL Encryption and Decryption with Session Data vs. MySQL Storage Through the Lens of Sun Tzu

In the digital battlefield, securing data is paramount. OpenSSL encryption and decryption are crucial weapons in our arsenal, and understanding the strategic use of session data (cookies) versus MySQL storage can make all the difference. To explore these strategies, we’ll turn to the ancient wisdom of Sun Tzu’s “The Art of War,” examining the strengths and weaknesses of these approaches and how they align with Sun Tzu’s principles.

The Battlefield: OpenSSL Encryption and Decryption

OpenSSL is a robust toolkit that provides cryptographic functions, including encryption and decryption. Its strength lies in its ability to secure data using algorithms like AES-256, combined with mechanisms such as initialization vectors (IVs) and hash-based message authentication codes (HMACs). But where should this encryption and decryption take place? In the realms of session data or database storage?

Session Data (Cookies): The Quick Strike

1. The Strategy of Speed and Agility

• Convenience: Storing encryption keys or encrypted data in session cookies offers swift access and ease of implementation. This is akin to a swift cavalry maneuver, allowing for rapid deployment and access to encrypted data.
• Stateless Operations: Sessions offer a temporary battlefield, where data and keys are managed on a per-session basis. This approach allows for quick encryption and decryption but limits the persistence of data to the lifespan of the session.

2. The Risks of the Quick Strike

• Security Risks: Session cookies are stored on the client-side, making them vulnerable to attacks such as cross-site scripting (XSS). The strategic challenge here is to safeguard the session data as it traverses the battlefield.
• Limited Persistence: Once the session ends, so do the cookies, making this strategy less suitable for long-term data storage.

Sun Tzu’s Wisdom: “Speed is the essence of war.” The agility of session storage aligns with this principle, offering rapid access but at the cost of security and persistence.

MySQL Storage: The Strategic Fortification

1. The Strategy of Long-Term Security

• Persistent Storage: MySQL databases provide a secure, long-term storage solution for both encryption keys and encrypted data. This is like fortifying a stronghold, ensuring data remains secure even beyond the immediate campaign.
• Controlled Access: By keeping sensitive information on the server-side, you reduce exposure to client-side attacks. This strategy is more resilient to external threats.

2. The Risks of Fortification

• Performance Overhead: Accessing and managing data in MySQL can introduce latency compared to session storage. This is akin to the slower movement of a fortified army compared to a fast-moving cavalry.
• Complexity: Implementing encryption and decryption with MySQL involves additional complexity, such as handling database connections and ensuring robust security measures for stored data.

Sun Tzu’s Wisdom: “The skillful fighter puts himself into a position which makes defeat impossible.” Using MySQL for secure storage aligns with this principle, ensuring long-term security and control, albeit with a potential trade-off in agility and performance.

Comparative Analysis

1. Security and Persistence

• Session Data: Offers immediate access but with higher risks and lower persistence. Ideal for temporary or ephemeral data needs.
• MySQL Storage: Provides persistent and secure data storage but with added complexity and potential performance costs. Suitable for long-term data management.

2. Flexibility vs. Fortification

• Session Data: Flexibility and speed in data handling, akin to a quick strike on the battlefield. However, security and persistence are not as fortified.
• MySQL Storage: Fortified and secure, but potentially slower and more complex to manage. A strategic choice for long-term data protection.

Sun Tzu’s Wisdom: “Know your enemy and know yourself and you can fight a hundred battles without disaster.” Understanding the strengths and limitations of each approach allows you to choose the best strategy for your specific needs.

Examples:

1. OpenSSL Encryption/Decryption Using Stored Session Data (Cookies) Demo
2. OpenSSL Encryption/Decryption Using Random Cyphers & Stored Session Data (Cookies) Demo

Conclusion

In the realm of data encryption and decryption, the choice between session storage and MySQL storage reflects a balance between speed, security, and persistence. Like Sun Tzu’s strategic principles, your approach should be guided by the context and objectives of your mission. Whether you opt for the agility of session data or the fortification of MySQL, aligning your strategy with your needs ensures a victorious outcome in the ever-evolving landscape of digital security.

By applying these ancient strategies to modern encryption practices, you can better navigate the complexities of data security, ensuring that your digital battlefield is well-defended and strategically sound.

SSH-Snake, a self-modifying worm that leverages SSH credentials.

Original Article : The Hacker News

A recently open-sourced network mapping tool called SSH-Snake has been repurposed by threat actors to conduct malicious activities.

“SSH-Snake is a self-modifying worm that leverages SSH credentials discovered on a compromised system to start spreading itself throughout the network,” Sysdig researcher Miguel Hernández said.

“The worm automatically searches through known credential locations and shell history files to determine its next move.”

SSH-Snake was first released on GitHub in early January 2024, and is described by its developer as a “powerful tool” to carry out automatic network traversal using SSH private keys discovered on systems.

In doing so, it creates a comprehensive map of a network and its dependencies, helping determine the extent to which a network can be compromised using SSH and SSH private keys starting from a particular host. It also supports resolution of domains which have multiple IPv4 addresses.

“It’s completely self-replicating and self-propagating – and completely fileless,” according to the project’s description. “In many ways, SSH-Snake is actually a worm: It replicates itself and spreads itself from one system to another as far as it can.”

BotNet CNC Control Hacker Infiltrates & Exploits Vulnerabilities Vie SSH TCP Both Hardware Software Exploited

Sysdig said the shell script not only facilitates lateral movement, but also provides additional stealth and flexibility than other typical SSH worms.

The cloud security company said it observed threat actors deploying SSH-Snake in real-world attacks to harvest credentials, the IP addresses of the targets, and the bash command history following the discovery of a command-and-control (C2) server hosting the data.

How Does It Work?

These attacks involve active exploitation of known security vulnerabilities in Apache ActiveMQ and Atlassian Confluence instances in order to gain initial access and deploy SSH-Snake.
“The usage of SSH keys is a recommended practice that SSH-Snake tries to take advantage of in order to spread,” Hernández said. “It is smarter and more reliable which will allow threat actors to reach farther into a network once they gain a foothold.”

When reached for comment, Joshua Rogers, the developer of SSH-Snake, told The Hacker News that the tool offers legitimate system owners a way to identify weaknesses in their infrastructure before attackers do, urging companies to use SSH-Snake to “discover the attack paths that exist – and fix them.”

“It seems to be commonly believed that cyber terrorism ‘just happens’ all of a sudden to systems, which solely requires a reactive approach to security,” Rogers said. “Instead, in my experience, systems should be designed and maintained with comprehensive security measures.”

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“If a cyber terrorist is able to run SSH-Snake on your infrastructure and access thousands of servers, focus should be put on the people that are in charge of the infrastructure, with a goal of revitalizing the infrastructure such that the compromise of a single host can’t be replicated across thousands of others.”

Rogers also called attention to the “negligent operations” by companies that design and implement insecure infrastructure, which can be easily taken over by a simple shell script.

“If systems were designed and maintained in a sane manner and system owners/companies actually cared about security, the fallout from such a script being executed would be minimized – as well as if the actions taken by SSH-Snake were manually performed by an attacker,” Rogers added.

“Instead of reading privacy policies and performing data entry, security teams of companies worried about this type of script taking over their entire infrastructure should be performing total re-architecture of their systems by trained security specialists – not those that created the architecture in the first place.”

The disclosure comes as Aqua uncovered a new botnet campaign named Lucifer that exploits misconfigurations and existing flaws in Apache Hadoop and Apache Druid to corral them into a network for mining cryptocurrency and staging distributed denial-of-service (DDoS) attacks.

The hybrid cryptojacking malware was first documented by Palo Alto Networks Unit 42 in June 2020, calling attention to its ability to exploit known security flaws to compromise Windows endpoints.
As many as 3,000 distinct attacks aimed at the Apache big data stack have been detected over the past month, the cloud security firm said. This also comprises those that single out susceptible Apache Flink instances to deploy miners and rootkits.

“The attacker implements the attack by exploiting existing misconfigurations and vulnerabilities in those services,” security researcher Nitzan Yaakov said.

Apache Vulnerability Update Available!

“Apache open-source solutions are widely used by many users and contributors. Attackers may view this extensive use as an opportunity to have inexhaustible resources for implementing their attacks on them.”

This is a Basic Encryption and Decryption Form using PhP.

Simple-PhP-Encryption-Decryption.php

Example script using OpenSSL AES 256 with Salt and a random generated password.
It’s the little things.

#!/bin/bash
clear
echo "Input String:"
    read input
        pass=$(echo cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w 1024 | head -n 1)
        encrypt="$(echo -e $input | openssl aes-256-cbc -pbkdf2 -iter 20000 -salt -a -e -k $pass)"
        decrypt="$(echo -e $encrypt | openssl aes-256-cbc -pbkdf2 -iter 20000 -salt -a -d -k $pass)"
    echo -e "Encrypted String: "$encrypt
    echo -e "Decrypted String: "$decrypt
    echo "Hit Any Key.."
  read anykey
./$(basename $0) && exit