QID 980976

QID 980976: Java (maven) Security Update for com.typesafe.akka:akka-actor_2.12 (GHSA-mr95-9rr4-668f)

Lightbend Akka 2.5.x before 2.5.16 allows message disclosure and modification because of an RNG error. A random number generator is used in Akka Remoting for TLS (both classic and Artery Remoting). Akka allows configuration of custom random number generators. For historical reasons, Akka included the AES128CounterSecureRNG and AES256CounterSecureRNG random number generators. The implementations had a bug that caused the generated numbers to be repeated after only a few bytes. The custom RNG implementations were not configured by default but examples in the documentation showed (and therefore implicitly recommended) using the custom ones. This can be used by an attacker to compromise the communication if these random number generators are enabled in configuration. It would be possible to eavesdrop, replay, or modify the messages sent with Akka Remoting/Cluster.

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

  • CVSS V3 rated as Critical - 9.1 severity.
  • CVSS V2 rated as High - 6.4 severity.
    • Solution
    Customers are advised to refer to GHSA-mr95-9rr4-668f for updates pertaining to this vulnerability.
    Vendor References

    CVEs related to QID 980976

    CVE-2018-16115 |
    Software Advisories
    Advisory ID Software Component Link
    GHSA-mr95-9rr4-668f com.typesafe.akka:akka-actor_2.11 URL Logo github.com/advisories/GHSA-mr95-9rr4-668f
    GHSA-mr95-9rr4-668f com.typesafe.akka:akka-actor_2.12 URL Logo github.com/advisories/GHSA-mr95-9rr4-668f
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