CVE-2006-4339

Critical

A flaw was found in OpenSSL. When configured to use an RSA key with exponent 3, OpenSSL improperly removes PKCS-1 padding before generating…

redhat·CWE-310·Published 2006-09-05

CVSS

9.1

EPSS

0.05

KEV

Exploits

Vendor statements (58)

cve.orgen

345 chars

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.

NVDes

414 chars

OpenSSL en versiones anteriores a 0.9.7, 0.9.7 en versiones anteriores a 0.9.7k y 0.9.8 en versiones anteriores a 0.9.8c, cuando usa una clave RSA con exponente 3, elimina relleno PKCS-1 antes de generar un hash, lo que permite a atacantes remotos falsificar una firma PKCS #1 v1.5 que está firmada por dicha clave RSA e impide a OpenSSL verificar correctamente los certificados X.509 y otros que utilizan PKCS #1.

CVSS metrics across sources

Version	Type	Source	Base	Exp	Impact	Vector
2.0	Primary	NVD	4.3	8.6	2.9	AV:N/AC:M/Au:N/C:P/I:N/A:N
3.1	Primary	cve.org	9.1	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1	Primary	NVD	9.1	3.9	5.2	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
3.1	Secondary	ENISA EUVD	9.1	—	—	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N