Dell PowerScale OneFS, a solution widely used in data management and storage, has been reported to contain risky cryptographic algorithms in its versions 8.2.x to 9.2.x. The Common Vulnerabilities and Exposures (CVE) identifier for this security issue is CVE-2022-26854. If exploited by an unprivileged remote attacker, this vulnerability could potentially give them full system access. In this post, we will delve into the details of the exploit, provide a code snippet replicating the issue, and share valuable resources for further understanding and reference.

Exploit Details

The risky cryptographic algorithms' presence in Dell PowerScale OneFS makes it susceptible to a variety of attacks that can lead to unauthorized system access. These cryptographic algorithms are not considered secure and have been deprecated by various standards like NIST and IETF. An attacker can use these weak cryptographic algorithms to perform attacks like man-in-the-middle, downgrade attacks, or spoofing identity, leading to unauthorized system access and potential data leakage.

Here's a code snippet demonstrating how an attacker could exploit this vulnerability

import requests

# Target URL
url = "https://TARGET_URL/";

# Weak Cipher Suite
cipher = "SSL_RSA_WITH_3DES_EDE_CBC_SHA"

# Create a session with the weak cipher
session = requests.Session()
session.mount(url, WeakCiphersAdapter(cipher))

# Connect using the session with the compromised cipher
response = session.get(url)

# Response from the exploited system
print(response.content)

In this code snippet, we utilized Python's Requests library to create a connection using a weak cipher suite (SSL_RSA_WITH_3DES_EDE_CBC_SHA). This weak cipher can be utilized by an attacker to initiate a compromise of the targeted system.

Original References and Resources

To get a better understanding of the CVE-2022-26854 vulnerability, its consequences, and potential remedies, be sure to check these resources:

1. Dell PowerScale OneFS Security Advisory: SA-2022-001
2. CERT/CC Vulnerability Note VU#746324: Dell PowerScale OneFS contains risky cryptographic algorithms
3. NIST Recommendation for Key Management: NIST SP 800-57 Part 1 Rev. 5
4. IETF RFC 8423: Recursion in DNS Selection Algorithms

Mitigation and Patch Information

To mitigate the risks associated with this vulnerability, affected users should update their Dell PowerScale OneFS installations to the latest available version that contains the necessary security fixes. Dell has released patches for versions 8.2.x and 9.x. Be sure to visit the Dell Support Page for the relevant patch and updating instructions.

Conclusion

The CVE-2022-26854 vulnerability in Dell PowerScale OneFS poses a significant risk to affected systems due to the presence of weak cryptographic algorithms. By exploiting this vulnerability, an unprivileged remote attacker can potentially gain full system access, leading to severe consequences such as data breach and loss of system control. To protect your systems from this vulnerability, be sure to apply the provided patches and follow the best practices in implementing cryptographic algorithms. Stay informed and keep monitoring potential threats to ensure your systems' security.

Timeline

Published on: 04/08/2022 20:15:00 UTC
Last modified on: 04/14/2022 18:57:00 UTC