CVE-2018-16115

Description

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.

Category

9.1
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.31%
Vendor Advisory akka.io
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://doc.akka.io/docs/akka/current/security/2018-08-29-aes-rng.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2018-16115?
CVE-2018-16115 has been scored as a critical severity vulnerability.
How to fix CVE-2018-16115?
To fix CVE-2018-16115, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-16115 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-16115 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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