CVE-2006-2940

High

Description

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.

SeverityHigh
CVSS7.8
Exploit probability92. percentile5.1%
ProductOpenssl
PublishedSep 28, 2006
First seenSep 28, 2006

How to fix

Affected products

ProductAffected versionsFixed in
openssl openssl0.9.1c, 0.9.2b, 0.9.3, 0.9.3a, 0.9.4, 0.9.5, 0.9.5a, 0.9.6, 0.9.6a, 0.9.6b, 0.9.6c, 0.9.6d, 0.9.6e, 0.9.6f, 0.9.6g, 0.9.6h, 0.9.6i, 0.9.6j, 0.9.6k, 0.9.6l, 0.9.6m, 0.9.7, 0.9.7a, 0.9.7b, 0.9.7c, 0.9.7d, 0.9.7e, 0.9.7f, 0.9.7g, 0.9.7h, 0.9.7i, 0.9.7j, 0.9.7k, 0.9.8, 0.9.8a, 0.9.8b, 0.9.8c—

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