Vulnerability Description
In Lightbend Akka before 2.8.1, the async-dns resolver (used by Discovery in DNS mode and transitively by Cluster Bootstrap) uses predictable DNS transaction IDs when resolving DNS records, making DNS resolution subject to poisoning by an attacker. If the application performing discovery does not validate (e.g., via TLS) the authenticity of the discovered service, this may result in exfiltration of application data (e.g., persistence events may be published to an unintended Kafka broker). If such validation is performed, then the poisoning constitutes a denial of access to the intended service. This affects Akka 2.5.14 through 2.8.0, and Akka Discovery through 2.8.0.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Lightbend | Akka Actor | >= 2.5.14, < 2.8.1 |
| Lightbend | Akka Discovery | < 2.8.1 |
References
- https://akka.io/security/akka-async-dns-2023-31442.htmlVendor Advisory
- https://lightbend.comProduct
- https://akka.io/security/akka-async-dns-2023-31442.htmlVendor Advisory
- https://lightbend.comProduct
FAQ
What is CVE-2023-31442?
CVE-2023-31442 is a vulnerability with a CVSS score of 7.5 (HIGH). In Lightbend Akka before 2.8.1, the async-dns resolver (used by Discovery in DNS mode and transitively by Cluster Bootstrap) uses predictable DNS transaction IDs when resolving DNS records, making DNS...
How severe is CVE-2023-31442?
CVE-2023-31442 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-31442?
Check the references section above for vendor advisories and patch information. Affected products include: Lightbend Akka Actor, Lightbend Akka Discovery.