CVSS 3.1 Score 5.3 of 10 (medium)


Published Jul 31, 2023
Updated: Feb 4, 2024
CWE ID 834


CVE-2023-3817 is a cyber vulnerability that affects multiple products, including OpenSSL. The vulnerability occurs when checking excessively long Diffie-Hellman (DH) keys or parameters, resulting in slow performance. This issue can be exploited by attackers who provide untrusted DH keys or parameters, leading to a potential Denial of Service (DoS) attack. The function DH_check() is affected, and it is called by various other OpenSSL functions. To remediate this vulnerability, it is recommended to update to the latest version of OpenSSL that includes the fix for CVE-2023-3446. The danger this vulnerability poses to organizations lies in the risk of service disruption due to prolonged computation times for DH key checks.


Explore Beyond the CVE Basics with Recorded Future's Vulnerability Intelligence

Note: This is just a basic overview providing quick insights into CVE-2023-3817 information. Gain full access to comprehensive CVE data, risk scores, prioritization, and mitigation data through Recorded Future's Vulnerability Intelligence:
  • Prioritize with Risk-Based Scoring
  • Explore the Extensive Vulnerability Database
  • Receive Early Alerts on Emerging CVEs
  • Focus on Critical Exploitable Vulnerabilities
  • Streamline Remediation with Integration Options