Linguistic Lumberjack: Understanding CVE-2024-4323 in Fluent Bit - #LinguisticLumberjack
A critical vulnerability named "Linguistic Lumberjack" (CVE-2024-4323) has been identified in Fluent Bit, a widely-used open-source logging and metrics tracking utility. The vulnerability, present in versions 2.0.7 to 3.0.3, arises from a heap buffer overflow in the built-in HTTP server when handling trace requests, potentially leading to denial of service attacks, sensitive information disclosure, or even remote code execution. Major cloud providers like Microsoft Azure, Google Cloud Platform, Amazon Web Services, and numerous companies utilize Fluent Bit, making the vulnerability a significant threat. Users are advised to upgrade to version 3.0.4, which addresses the issue, and restrict access to the vulnerable monitoring API endpoint as a mitigation measure.