CVE-2023-31442 : Vulnerability Insights and Analysis
Learn about CVE-2023-31442 affecting Lightbend Akka versions before 2.8.1 due to predictable DNS transaction IDs, leading to data exfiltration or denial of service if service validity is not verified.
Lightbend Akka before 2.8.1 is affected by a vulnerability where the async-dns resolver uses predictable DNS transaction IDs, making DNS resolution vulnerable to poisoning attacks. This can lead to data exfiltration or denial of service if service authenticity is not validated.
Understanding CVE-2023-31442
This CVE affects Akka versions 2.5.14 through 2.8.0, and Akka Discovery through 2.8.0.
What is CVE-2023-31442?
CVE-2023-31442 in Lightbend Akka exposes a vulnerability in the async-dns resolver, allowing attackers to poison DNS records due to the use of predictable transaction IDs. This can result in data exfiltration or denial of service if service authenticity is not verified.
The Impact of CVE-2023-31442
The vulnerability can lead to potential data breaches if the discovered service authenticity is not verified. It may also result in denial of access to the intended service.
Technical Details of CVE-2023-31442
The following technical details outline the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability arises from the use of predictable DNS transaction IDs by the async-dns resolver, making DNS resolution susceptible to poisoning attacks.
Affected Systems and Versions
Lightbend Akka versions 2.5.14 through 2.8.0, and Akka Discovery through 2.8.0 are affected by CVE-2023-31442.
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating DNS records due to the predictable nature of transaction IDs used by the async-dns resolver.
Mitigation and Prevention
To mitigate the risks associated with CVE-2023-31442, immediate steps should be taken, along with long-term security practices and timely patching.
Immediate Steps to Take
Ensure that verification of service authenticity is implemented and consider upgrading to a non-affected version.
Long-Term Security Practices
Implement robust security practices such as TLS validation for discovered services and regular security monitoring.
Patching and Updates
Stay informed about security updates from Lightbend Akka and apply patches promptly to protect against CVE-2023-31442.