SB2025020525 - Reliance on Reverse DNS Resolution for a Security-Critical Action in Akka Lightbend

Description

This security bulletin contains information about 1 vulnerability.

1) Reliance on Reverse DNS Resolution for a Security-Critical Action (CVE-ID: CVE-2023-31442)

CWE-ID: CWE-350 - Reliance on Reverse DNS Resolution for a Security-Critical Action

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to perform a denial of service attack.

The vulnerability exists due to async-dns resolver (used by Discovery in DNS mode and transitively by Cluster Bootstrap) uses predictable DNS transaction IDs when resolving DNS records. A remote attacker can exploit the vulnerability to perform a denial of service attack.

Remediation

Install update from vendor's website.

References

• https://akka.io/security/akka-async-dns-2023-31442.html
• https://lightbend.com