CVE Catalog

CVE-2006-2940

High
Published: Translated: NVD NIST

Summary

A vulnerability in OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows attackers to cause a denial of service (CPU consumption) via parasitic public keys with large public exponent or modulus values in X.509 certificates that require extra processing time during RSA signature verification.

Risk Assessment

An attacker can overload a server running a vulnerable OpenSSL version, causing significant slowdown or complete service unavailability, impacting organizational continuity.

Recommendation

Immediately upgrade OpenSSL to version 0.9.7l, 0.9.8d, or later to eliminate the vulnerability to DoS attacks via parasitic public keys.

Related vulnerabilities

Original NVD description (English source)

OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows attackers to cause a denial of service (CPU consumption) via parasitic public keys with large (1) "public exponent" or (2) "public modulus" values in X.509 certificates that require extra time to process when using RSA signature verification.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS