RSA BSAFE Micro Edition Suite, Crypto-C Micro Edition, Crypto-J, SSL-J and SSL-C all suffer from various crypto, denial of service, and underflow vulnerabilities.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ESA-2015-081: RSA BSAFE® Micro Edition Suite, Crypto-C Micro Edition, Crypto-J, SSL-J and SSL-C Multiple Vulnerabilities EMC Identifier: ESA-2015-081 CVE Identifier: CVE-2015-0533, CVE-2015-0534, CVE-2015-0535, CVE-2015-0536, CVE-2015-0537 Severity Rating: CVSS v2 Base Score: See below for individual scores for each CVE Affected Products: RSA BSAFE Micro Edition Suite (MES) all 4.1.x versions prior to 4.1.3 RSA BSAFE Micro Edition Suite (MES) all 4.0.x versions prior to 4.0.8 RSA BSAFE Crypto-C Micro Edition (Crypto-C ME) 4.1 RSA BSAFE Crypto-C Micro Edition (Crypto-C ME) all versions prior to 4.0.4 RSA BSAFE Crypto-J all versions prior to 6.2 RSA BSAFE SSL-J all versions prior to 6.2 RSA BSAFE SSL-C all versions including 2.8.9 Unaffected Products: RSA BSAFE Micro Edition Suite (MES) 4.1.3 RSA BSAFE Micro Edition Suite (MES) 4.0.8 RSA BSAFE Crypto-C Micro Edition (Crypto-C ME) 4.0.4 RSA BSAFE Crypto-J 6.2 RSA BSAFE SSL-J 6.2 Summary: RSA announces security fixes to RSA BSAFE® Micro Edition Suite, Crypto-C Micro Edition, Crypto-J and SSL-J designed to address multiple vulnerabilities. Details: RSA BSAFE® Micro Edition Suite, Crypto-C Micro Edition, Crypto-J, SSL-J and SSL-C may be susceptible to the following potential vulnerabilities: CVE-2015-0533: ECDHE silently downgrades to ECDH [Client] When the RSA BSAFE MES or SSL-C implementation of the SSL/TLS protocol is used, it may allow remote attackers to successfully perform an SSL handshake using an ephemeral ECDH cipher suite with the server key exchange message omitted. This effectively removes forward secrecy from the cipher suite (similar to CVE-2014-3572). CVSS v2 Base Score: 5.0 (AV:N/AC:L/Au:N/C:N/I:P/A:N) Note: Affects MES and SSL-C versions listed above. CVE-2015-0534: Certificate fingerprints can be modified RSA BSAFE MES, Crypto-J and SSL-C versions as listed above does not enforce certain constraints on certificate data, which potentially allows remote attackers to defeat a fingerprint-based certificate-blacklist protection mechanism by including crafted data within a certificate’s unsigned portion (similar to CVE-2014-8275). CVSS v2 Base Score: 5.0 (AV:N/AC:L/Au:N/C:N/I:P/A:N) Note: Affects MES, Crypto-J, SSL-J and SSL-C versions listed above. CVE-2015-0535: The FREAK (Factoring RSA Export Keys) attack When the RSA BSAFE MES or SSL-C implementation of the SSL/TLS protocol is used, the attacker can potentially conduct RSA-to-EXPORT_RSA downgrade attacks against the client. The client would then accept the weak EXPORT-grade key, allowing the attacker to factor it and decrypt communication between the client and the server (similar to CVE-2015-0204). CVSS v2 Base Score: 4.3 (AV:N/AC:M/Au:N/C:N/I:P/A:N) Note: Affects MES and SSL-C versions listed above. CVE-2015-0536: A denial of service with Empty CKE with client auth and DHE When the RSA BSAFE MES or SSL-C implementation of the SSL/TLS protocol is used, it might be possible for a remote attacker to cause a denial of service via a ClientKeyExchange message with a length of zero when client authentication and Ephemeral Diffie-Hellman cipher suites are enabled (similar to CVE-2015-1787). CVSS v2 Base Score: 2.6 (AV:N/AC:H/Au:N/C:N/I:N/A:P) Note: Affects MES and SSL-C versions listed above. CVE-2015-0537: An integer underflow in Base64 decode implementation An integer underflow in the base64-decoding implementation in RSA BSAFE MES, Crypto-C ME and SSL-C may allow remote attackers to cause a denial of service via a segmentation fault or an unexpected behavior via memory corruption (similar to CVE-2015-0292). CVSS v2 Base Score: 7.5 (AV:N/AC:L/Au:N/C:P/I:P/A:P) Note: Affects MES, Crypto-C ME and SSL-C versions listed above. Recommendation: RSA BSAFE Micro Edition Suite (MES) 4.0.8 and 4.1.3 contains fixes for CVE-2015-0533, CVE-2015-0534, CVE-2015-0535, CVE-2015-0536, CVE-2015-0537 RSA BSAFE Crypto-C Micro Edition (Crypto-C ME) 4.0.4 contains the fix for CVE-2015-0537. RSA BSAFE Crypto-J 6.2 contains the fix for CVE-2015-0534 RSA BSAFE SSL-J 6.2 contains the fix for CVE-2015-0534 RSA recommends all customers upgrade to the versions listed above at the earliest opportunity. This advisory will be updated when the fixes are provided for RSA BSAFE Crypto-C ME 4.1.x series. RSA recommends all RSA BSAFE SSL-C customers upgrade to RSA BSAFE Micro Edition Suite (MES) as per previous notifications about the End Of Life (EOL) for BSAFE SSL-C. The following workaround is available in BSAFE SSL-C 2.8.x for CVE-2015-0534: Ensure that the application does not perform blacklisting using the bytes of the entire certificate or a hash thereof. Modify the blacklist comparison to use only the Issuer/Serial no. combination. Obtaining Downloads: To request your upgrade of the software, please call your local support telephone number (contact phone numbers are available at http://www.emc.com/support/rsa/contact/index.htm) for most expedient service. Obtaining Documentation: To obtain RSA documentation, log on to RSA SecurCare Online at https://knowledge.rsasecurity.com and click Products in the top navigation menu. Select the specific product whose documentation you want to obtain. Scroll to the section for the product version that you want and click the set link. Severity Rating: For an explanation of Severity Ratings, refer to the Knowledge Base Article, “Security Advisories Severity Rating” at https://knowledge.rsasecurity.com/scolcms/knowledge.aspx?solution=a46604. RSA recommends all customers take into account both the base score and any relevant temporal and environmental scores which may impact the potential severity associated with particular security vulnerability. Obtaining More Information: For more information about RSA products, visit the RSA web site at http://www.rsa.com. Getting Support and Service: For customers with current maintenance contracts, contact your local RSA Customer Support center with any additional questions regarding this RSA SecurCare Note. For contact telephone numbers or e-mail addresses, log on to RSA SecurCare Online at https://knowledge.rsasecurity.com, click Help & Contact, and then click the Contact Us - Phone tab or the Contact Us - Email tab. 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Quelle: Packet storm Security