9.1

CVE-2018-16115: lightbend akka

CVSS: 9.1v3.0CriticalModified
AliasesGHSA-mr95-9rr4-668f
Published 29-08-2018Last modified 05-08-2024
Open JSON

Vulnerability summary

CVE-2018-16115 is a critical (CVSS 9.1) vulnerability in lightbend akka. EPSS estimates a 1.19% chance of exploitation in the next 30 days, higher than 67.4% of scored vulnerabilities.

Overall risk
70/100
0100
High · default modelHow is this calculated?
CVSS score
9.1/10
010
Critical · v3.0 (NVD)
EPSS score
1.19%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 29-08-2018
    PublishedVulnerability first disclosed.
  2. 05-08-2024
    Last modifiedVulnerability information updated.

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.

CVSS metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

1.19%

Chance of exploitation in the next 30 days

Percentile

67%

Versus all other CVEs

30-day change

0.00 pp

From 1.19% on 20-09-2026

20-09-202620-10-2026
EPSS score
1.19%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Com.typesafe.akka2 products
  • akka-actor_2.11≥ 2.5.0, < 2.5.16
  • akka-actor_2.12≥ 2.5.0, < 2.5.16
Lightbend1 product
  • akka≥ 2.5.0, < 2.5.16

2 vendors · 3 products

References

3 links