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CVE-2006-4339: openssl vulnerability
CVE-2006-4339: critical vulnerability affecting openssl. Check CVSS, KEV status, business impact and recommended administrator actions.
- CVSS
- 9.1 CRITICAL
- EPSS
- 90.5%
- Known exploited
- not in KEV
- Product
- openssl
What is known
A flaw was found in OpenSSL. When configured to use an RSA key with exponent 3, OpenSSL improperly removes PKCS-1 padding before generating a hash. This allows remote attackers to forge PKCS #1 v1.5 signatures. Consequently, OpenSSL may incorrectly verify X.509 and other certificates, leading to a bypass of trust and authentication mechanisms.
Business impact
Successful exploitation of CVE-2006-4339, a critical vulnerability (CVSS 9.1) affecting openssl, may affect the confidentiality, integrity or availability of the vulnerable environment. The exact impact depends on the installed version, exposed interfaces and deployment configuration.
Recommended administrator action
Confirm whether openssl is present and compare installed versions with the vendor advisory and NVD record. Apply the vendor patch or documented mitigation; until remediation is complete, reduce exposure of affected interfaces, review relevant logs and monitor for indicators of exploitation. DataHouse can support version verification, managed patching, network exposure reduction, log review and backup validation for dedicated, cloud and colocated environments.