QID 981137

QID 981137: Java (maven) Security Update for org.bouncycastle:bcprov-jdk15 (GHSA-c8xf-m4ff-jcxj)

In the Bouncy Castle JCE Provider version 1.55 and earlier the primary engine class used for AES was AESFastEngine. Due to the highly table driven approach used in the algorithm it turns out that if the data channel on the CPU can be monitored the lookup table accesses are sufficient to leak information on the AES key being used. There was also a leak in AESEngine although it was substantially less. AESEngine has been modified to remove any signs of leakage (testing carried out on Intel X86-64) and is now the primary AES class for the BC JCE provider from 1.56. Use of AESFastEngine is now only recommended where otherwise deemed appropriate.

Successful exploitation of this vulnerability may affect the confidentiality, integrity, and availability of the targeted user.

  • CVSS V3 rated as Medium - 5.3 severity.
  • CVSS V2 rated as Medium - 5 severity.
    • Solution
    Customers are advised to refer to GHSA-c8xf-m4ff-jcxj for updates pertaining to this vulnerability.
    Vendor References

    CVEs related to QID 981137

    CVE-2016-1000339 |
    Software Advisories
    Advisory ID Software Component Link
    GHSA-c8xf-m4ff-jcxj org.bouncycastle:bcprov-jdk14 URL Logo github.com/advisories/GHSA-c8xf-m4ff-jcxj
    GHSA-c8xf-m4ff-jcxj org.bouncycastle:bcprov-jdk15 URL Logo github.com/advisories/GHSA-c8xf-m4ff-jcxj
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