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This vulnerability has been modified since it was last analyzed by the NVD. It is awaiting reanalysis which may result in further changes to the information provided.
OpenSSL before 0.9.7, 0.9.7 before 0.9.7k, and 0.9.8 before 0.9.8c, when using an RSA key with exponent 3, removes PKCS-1 padding before generating a hash, which allows remote attackers to forge a PKCS #1 v1.5 signature that is signed by that RSA key and prevents OpenSSL from correctly verifying X.509 and other certificates that use PKCS #1.
Source: MITRE View Analysis Description
OpenSSL before 0.9.7, 0.9.7 before 0.9.7k, and 0.9.8 before 0.9.8c, when using an RSA key with exponent 3, removes PKCS-1 padding before generating a hash, which allows remote attackers to forge a PKCS #1 v1.5 signature that is signed by that RSA key and prevents OpenSSL from correctly verifying X.509 and other certificates that use PKCS
Source: MITRE
Base Score: 4.3 MEDIUM Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend) Impact Subscore: 2.9 Exploitability Subscore: 8.6
Access Vector (AV): Network Access Complexity (AC): Medium Authentication (AU): None Confidentiality (C): Partial Integrity (I): None Availability (A): None Additional Information: Allows unauthorized disclosure of information
Vulnerable. This issue affects OpenSSL and OpenSSL compatibility packages in Red Hat Enterprise Linux 2.1, 3, and 4. Updates, along with our advisory are available at the URL below. http://rhn.redhat.com/errata/RHSA-2006-0661.html Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.
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Vulnerability Type (View All)
http://www.securityfocus.com/archive/1/445231/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/445822/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/450327/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/456546/100/200/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/489739/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/archive/1/445231/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/archive/1/445822/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/archive/1/450327/100/0/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/archive/1/456546/100/200/threaded [No Types Assigned]
http://www.securityfocus.com/archive/1/archive/1/489739/100/0/threaded [No Types Assigned]
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11656 [No Types Assigned]
http://oval.mitre.org/repository/data/getDef?id=oval:org.mitre.oval:def:11656 [No Types Assigned]
https://exchange.xforce.ibmcloud.com/vulnerabilities/28755 [No Types Assigned]
http://xforce.iss.net/xforce/xfdb/28755 [No Types Assigned]
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.
OpenSSL anterior a 0.9.7, 0.9.7 anterior a 0.9.7k, y 0.9.8 anterior a 0.9.8c, cuando se usa una clave RSA con exponente 3, elimina el relleno PKCS-1 antes de generar un resumen (hash), lo cual permite a atacantes remotos falsificar una firma PKCS #1 v1.5 que está firmada por dicha clave RSA e impide que OpenSSL verifique correctamente certificados X.509 y otros que también utilicen PKCS #1.
http://marc.info/?l=bind-announce&m=116253119512445&w=2
http://marc.theaimsgroup.com/?l=bind-announce&m=116253119512445&w=2
http://secunia.com/advisories/41818