DSA-2019-094: RSA BSAFE® Crypto-J Multiple Security Vulnerabilities

Document created by RSA Product Team Employee on Aug 15, 2019Last modified by RSA Product Team Employee on Aug 15, 2019
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Dell EMC Identifier:DSA-2019-094
CVE Identifier:CVE-2019-3738, CVE-2019-3739, CVE-2019-3740
Severity:Medium
Severity Rating:View details below for individual CVSS Score for each CVE
Affected Products:
  • RSA BSAFE Crypto-J versions prior to 6.2.5
  • RSA BSAFE SSL-J, all currently supported versions where 6.2.4.1 is the most recent release as of this advisory
  • RSA BSAFE Cert-J, all currently supported versions where 6.2.4 is the most recent release as of this advisory
Summary:RSA BSAFE Crypto-J contains fixes for multiple security vulnerabilities that could potentially be exploited by malicious users to compromise the affected system.
Details:
  • Improper Verification of Cryptographic Signature – CVE-2019-3738
    RSA BSAFE Crypto-J versions prior to 6.2.5 are vulnerable to an Improper Verification of Cryptographic Signature vulnerability. A malicious remote attacker could potentially exploit this vulnerability to coerce two parties into computing the same predictable shared key.

 

CVSSv3 Base Score: 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) – Medium

 

  • Information Exposure Through Timing Discrepancy – CVE-2019-3739
    RSA BSAFE Crypto-J versions prior to 6.2.5 are vulnerable to Information Exposure Through Timing Discrepancy vulnerabilities during ECDSA key generation. A malicious remote attacker could potentially exploit those vulnerabilities to recover ECDSA keys.

 

CVSSv3 Base Score: 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) – Medium

 

  • Information Exposure Through Timing Discrepancy – CVE-2019-3740
    RSA BSAFE Crypto-J versions prior to 6.2.5 are vulnerable to an Information Exposure Through Timing Discrepancy vulnerabilities during DSA key generation. A malicious remote attacker could potentially exploit those vulnerabilities to recover DSA keys.

 

CVSSv3 Base Score: 6.5 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N) – Medium

Recommendation:

The following RSA BSAFE Crypto-J release contains resolutions to these vulnerabilities:

  • RSA BSAFE Crypto-J 6.2.5

 

RSA recommends all customers upgrade Crypto-J at the earliest opportunity.

 

As RSA BSAFE SSL-J uses Crypto-J for all cryptographic operations, RSA recommends all customers to upgrade to BSAFE SSL-J 6.2.4.x which supports using Crypto-J 6.2.5. Future releases of SSL-J 6.2.4.x will include Crypto-J 6.2.5.

 

As RSA BSAFE Cert-J uses Crypto-J for all cryptographic operations, RSA recommends all customers to upgrade to BSAFE Cert-J 6.2.4 which supports using Crypto-J 6.2.5. Future releases of Cert-J will include Crypto-J 6.2.5.

Credit:RSA would like to thank Antonio Sanso for reporting CVE -2019-3739 and CVE-2019-3740.
Severity Rating:For an explanation of Severity Ratings, refer to Dell’s Vulnerability Disclosure Policy. 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.
EOPS Policy:RSA has a defined End of Primary Support policy associated with all major versions. Please refer to the Product Version Life Cycle for additional details.
Legal Information:

Read and use the information in this RSA Security Advisory to assist in avoiding any situation that might arise from the problems described herein. If you have any questions regarding this advisory, contact RSA Customer Support. RSA Security LLC and its affiliates, including without limitation, its ultimate parent company, Dell Technologies, distribute RSA Security Advisories in order to bring to the attention of users of the affected RSA products, important security information.

 

RSA recommends that all users determine the applicability of this information to their individual situations and take appropriate action. The information set forth herein is provided "as is" without warranty of any kind. RSA disclaims all warranties, either express or implied, including the warranties of merchantability, fitness for a particular purpose, title and non-infringement.

 

In no event shall RSA, its affiliates or its suppliers, be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if RSA, its affiliates or its suppliers have been advised of the possibility of such damages. Some jurisdictions do not allow the exclusion or limitation of liability for consequential or incidental damages, so the foregoing limitation may not apply.

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