CVE-2025-54321
CVE-2025-54321
Weakness (CWE)
CVSS Vector
v3.1- Attack Vector
- Network
- Attack Complexity
- Low
- Privileges Required
- None
- User Interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
Description
In Ascertia SigningHub through 8.6.8, there is a lack of rate limiting on the reset password function, leading to an email bombing vulnerability. An authenticated attacker can exploit this by automating reset password requests.
Comprehensive Technical Analysis of CVE-2025-54321
1. Vulnerability Assessment and Severity Evaluation
CVE ID: CVE-2025-54321 Description: The vulnerability in Ascertia SigningHub through version 8.6.8 involves a lack of rate limiting on the reset password function, which can be exploited for email bombing. CVSS Score: 9.8
Severity Evaluation:
- CVSS Base Score: 9.8 (Critical)
- Impact Metrics:
- Confidentiality: High
- Integrity: High
- Availability: High
- Exploitability Metrics:
- Attack Vector: Network
- Attack Complexity: Low
- Privileges Required: Low
- User Interaction: None
- Scope: Unchanged
The high CVSS score indicates a critical vulnerability that can be easily exploited with significant impact on the confidentiality, integrity, and availability of the affected system.
2. Potential Attack Vectors and Exploitation Methods
Attack Vectors:
- Email Bombing: An attacker can automate the sending of numerous password reset requests to a targeted email address, overwhelming the recipient with a flood of emails.
- Denial of Service (DoS): The excessive number of password reset requests can overwhelm the email server, leading to a denial of service for legitimate users.
- Resource Exhaustion: Continuous password reset requests can exhaust system resources, affecting the performance and availability of the SigningHub service.
Exploitation Methods:
- Automated Scripts: Attackers can use automated scripts to send a high volume of password reset requests to the target email address.
- Botnets: Utilizing a botnet can amplify the attack, making it more difficult to mitigate and increasing the impact on the target system.
3. Affected Systems and Software Versions
Affected Software:
- Ascertia SigningHub versions up to and including 8.6.8.
Systems:
- Any system running the affected versions of Ascertia SigningHub, including on-premises installations and cloud-based deployments.
4. Recommended Mitigation Strategies
Immediate Mitigation:
- Rate Limiting: Implement rate limiting on the password reset function to restrict the number of requests from a single IP address or email address within a specific time frame.
- CAPTCHA: Introduce CAPTCHA challenges to prevent automated scripts from sending password reset requests.
- Monitoring: Enhance monitoring and alerting for unusual spikes in password reset requests to detect potential attacks early.
Long-Term Mitigation:
- Patch Management: Apply the latest patches and updates from Ascertia to address the vulnerability.
- User Education: Educate users about the risks of email bombing and how to recognize and report suspicious activity.
- Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues proactively.
5. Impact on Cybersecurity Landscape
Immediate Impact:
- Service Disruption: Organizations using Ascertia SigningHub may experience service disruptions and email server overloads.
- Reputation Damage: Email bombing can lead to loss of trust and reputation damage for the affected organization.
Long-Term Impact:
- Increased Awareness: This vulnerability highlights the importance of rate limiting and proper security controls for password reset functions.
- Enhanced Security Measures: The cybersecurity community may see an increase in the adoption of rate limiting, CAPTCHA, and other security measures to prevent similar attacks.
6. Technical Details for Security Professionals
Vulnerability Details:
- Lack of Rate Limiting: The password reset function in Ascertia SigningHub does not implement rate limiting, allowing an attacker to send an unlimited number of requests.
- Exploitation: An authenticated attacker can automate the sending of password reset requests, leading to email bombing and potential denial of service.
Detection and Response:
- Log Analysis: Analyze logs for unusual patterns in password reset requests, such as a high volume of requests from a single IP address or email address.
- Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious activity related to password reset requests.
- Incident Response: Develop an incident response plan to quickly identify, contain, and mitigate email bombing attacks.
References:
By addressing this vulnerability promptly and implementing robust security measures, organizations can mitigate the risks associated with email bombing and ensure the continued availability and integrity of their systems.