SolarWinds New 0-Day: Serv-U Update

SolarWinds Serv-U, one of the leading multi-protocol file servers, reported a critical exploit marked as CVE-2024-28995. It allows unauthorised access to sensitive files. This path traversal flaw poses a significant security risk.

Credit: CyberInsider

What is CVE-2024-28995?

CVE-2024-28995 is a path traversal vulnerability in SolarWinds Serv-U. Attackers can exploit it remotely and without authentication. It allows an attacker to send specially crafted requests to the server, potentially accessing sensitive files and data from the underlying operating system. This could include user data, server logs, and other critical files​

Historical Context

SolarWinds Serv-U has been targeted before. In 2021, a zero-day vulnerability (CVE-2021-35211) was exploited by a group called Circle Typhoon. This historical precedent underscores the importance of patching vulnerabilities in managed file transfer solutions, which are prime targets for cyber criminals​.

Exploitation Details

Researchers have observed both automated and manual exploitation attempts. These began after the release of proof-of-concept (PoC) exploit details on June 18, 2024. GreyNoise reported seeing active exploitation in the wild. The PoC scripts made it relatively straightforward for attackers to leverage this vulnerability, prompting urgent calls for patching​

Implications for Organisations

Managed file transfer solutions are prime targets for ransomware groups. Examples include attacks on Accellion’s FTA, Fortra’s GoAnywhere MFT, and Progress Software’s MOVEit Transfer. These attacks often result in data breaches and extortion attempt.

Mitigation and Recommendations

SolarWinds released a patch to address CVE-2024-28995. Users of Serv-U FTP and MFT solutions should upgrade to version 15.4.2 HF 2 or later. Immediate patching is crucial due to the active exploitation and sensitivity of the data at risk.

Identifying Affected Systems

Tenable has developed plugins to identify vulnerable systems. These plugins are available on the CVE page for CVE-2024-28995. Organisations should use these tools to detect and remediate this vulnerability.

Enhancing Security with Passwordless Systems

To bolster security and protect against vulnerabilities like CVE-2024-28995, consider implementing passwordless authentication systems. Traditional passwords are often a weak link in cybersecurity, prone to phishing, brute force attacks, and credential stuffing. By moving to a passwordless system, you can significantly enhance the security posture of your SolarWinds Serv-U environment.

Benefits of Passwordless Authentication:

  1. Reduced Attack Surface
  2. Improved User Experience
  3. Enhanced Security
  4. Compliance and Standards

Implementing Passwordless Systems with PureAuth:

PureAuth offers a robust passwordless authentication solution that can be integrated into your existing infrastructure. By using PureAuth, you can secure your SolarWinds Serv-U environment against unauthorised access and potential vulnerabilities.


CVE-2024-28995 is a serious vulnerability actively exploited in the wild. Organisations using SolarWinds Serv-U must prioritise patching to protect their systems. Enhancing security with passwordless systems is a proactive step in safeguarding your SolarWinds Serv-U environment. By implementing solutions like PureAuth, you can reduce the risk of exploitation from vulnerabilities like CVE-2024-28995 and ensure a more secure and user-friendly authentication process.

SnowBall effect of Snowflake Breach

Executive Summary

Snowflake an American cloud computing–based data cloud company, identified a breach in June 2024, which had far-reaching implications for various organisations. Attackers exploited stolen credentials from a Snowflake employee, enabling unauthorised access to sensitive customer data, including credentials and access tokens. This breach was exacerbated by bypassing Okta’s security measures, allowing the attackers to generate new session tokens and access extensive customer data without detection.

Key Affected Customers:

Attack Method

  • Credentials Theft: Initial access through compromised employee credentials
  • Bypass Mechanism: Circumvention of Okta Security Protocols
  • Exploitation: Generation of new session tokens to access databases and steal data

The Domino Effect

The Snowflake breach has created a domino effect, where the initial compromise has led to multiple subsequent breaches. This incident mirrors the earlier Okta breach,, where attackers leveraged stolen credentials to infiltrate various organizations.

Domino Effect of Snowflake Breach

Companies affected include:

  • Ticketmaster: Reported unauthorised access to sensitive data.
  • Advance Auto Parts: Experienced data theft, with stolen information now for sale on dark web marketplaces.
  • Santander Bank: Compromised customer data led to financial and reputational damage.
  • Hugging Face, Quote Wizard, Lending Tree: Also reported breaches, with more organizations likely to follow .

Inherent Weaknesses in Traditional IAM Solutions

Password + MFA Based Authentication:

  • Reliance on passwords makes systems vulnerable to phishing and credential theft.
  • Multi-Factor Authentication (MFA) is often ineffective as attackers can bypass Password + MFA protection mainly by phishing or using a compromised device.
  • Social Engineering attacks have shown that phishing resistant MFA like FIDO keys, & passkeys can prove to be ineffective & can be easily disabled or reset.

IAM Blind Spots:

Apart from reliance on vulnerable passwords for identifying user. The existing IAM solutions are blind to following risks

  • Connection Risk – Traditional IAM solutions lack visibility of user connections. They cannot know whether an authentication request is coming from an authorised actor or an attacker in the middle.
  • User’s Device Risk – They also do not account for the type & security posture of user’s devices, leaving systems exposed to malware and remote monitoring, as seen in the Uber incident.

Impact Assessment

The Snowflake breach is termed as the biggest data breach so far and it’s cascading effect has led to numerous organisations reporting security incidents & data breach. 

The amplification effect could potentially lead to a vast number of downstream breaches, escalating the overall impact.

Impact of Snowflake Breach
Credit: XQ

Towards a Secure Future

Challenges with Current Solutions:

  • Time and again Password + MFA based systems are proven to be ineffective against simple attacks like phishing & social engineering.
  • There is a pressing need for more robust authentication mechanisms.

Protect your Enterprise, #GoPasswordless with PureAUTH

FIDO Solutions like Passkeys and hardware tokens focus on giving users a passwordless experience keeping the passwords on the server as the primary way to identify and authenticate users.

PureAUTH Platform on the other hand provides a comprehensive passwordless approach, eliminating the passwords from server side & not just from user side. PureAUTH is the only solution that protects an organisation against phishing, social engineering, frauds & all types of credential-based attack.

To learn more about PureAUTH & how it protects your existing IAM systems like Okta, OneLogin, CISCO Duo, or Azure AD in just 60 minutes at Zero Cost – get in touch with us

Related Blogs

Okta Warns Customers of Credential Stuffing Attacks

Unpacking Okta’s Recent Security Breach

American Express Warns Customers of Third-Party Data Breach


American Express (Amex) has disclosed a potential data breach, affecting some of its credit card holders. The breach, originating from a third-party service provider, has raised concerns about the security of cardholder information.


  • March 4, 2024: Breach Notification:
    • American Express files a breach notification letter with the Massachusetts State Attorney General’s Office as a precautionary measure.
    • The breach is attributed to a point-of-sale attack at a merchant processor, not directly involving American Express or its service providers.
  • March 5, 2024: Public Disclosure:
    • Details of the breach are publicly disclosed by American Express, acknowledging the potential compromise of cardholder names, account numbers, and expiration dates.
    • American Express reassures card members and emphasises its robust monitoring systems.
Screenshot of American Express Breach Notice

Details of the Breach

Incident Overview:

  • The breach occurred due to a point-of-sale attack at a merchant processor, not directly involving American Express or its service providers.

Affected Information:

  • Account information potentially compromised includes cardholder names, American Express card account numbers, and expiration dates.
  • Both active and previously issued credit card account numbers may have been impacted.

Customer Perspective

Customer Liability:

  • American Express assures its card members that they won’t be liable for fraudulent charges on their accounts.
  • The company emphasises its sophisticated monitoring systems to detect and address any suspicious activity promptly.

Recommendations for Customers:

  • Customers should regularly review and monitor their account activity.
  • American Express recommends Free fraud and account activity alerts via email, SMS text messaging, and app notifications for added protection.

Industry Perspective

Accountability of Third-Party Service Providers:

  • Cyber security experts such as Liat Hayun, CEO and co-founder of Eureka Security, stress the importance of holding third-party service providers accountable for data security.
  • Recent incidents, like the Bank of America breach with Infosys McCamish Systems, highlight the persistent challenge of third-party vulnerabilities.
  • With breaches attributed to groups like LockBit ransomware, there’s a pressing need to fortify security measures.
  • Previous breaches, such as Bank of America’s exposure via Ernst & Young, emphasise the necessity of securing access points to sensitive data.


The American Express data breach serves as a reminder of the ongoing cybersecurity challenges faced by financial institutions and the imperative need for proactive security measures. Using and Managing passwords also costs a lot. The easiest solution of this unavoidable situation is adopting passwordless solutions for Identity and Access Management (IAM). Password-based authentication methods are increasingly vulnerable to cyber threats.  Embracing advanced authentication mechanisms can mitigate unauthorised access risks and safeguard sensitive information.