Critical Fluent Bit bug affects all major cloud providers, say researchers

Critical Fluent Bit bug affects all major cloud providers, say researchers

May 21, 2024 at 01:54PM

Infosec researchers have flagged a critical vulnerability (CVE-2024-4323) in Fluent Bit, a widely used logging component. Tenable discovered the flaw, potentially leading to denial of service, information leakage, and remote code execution. The issue affects versions 2.0.7 through 3.0.3 and may compromise the security of major cloud providers and blue chip companies. Upgrading to version 3.0.4 or restricting access to vulnerable endpoints is advised.

Here are the key takeaways from the meeting notes:

– Infosec researchers have identified a critical vulnerability (CVE-2024-4323) in Fluent Bit, which is a widely used logging component by major cloud providers and blue chip companies.
– The vulnerability can lead to denial of service (DoS), information leakage, and potentially remote code execution (RCE).
– Tenable discovered the flaw affecting versions 2.0.7 through 3.0.3, and provided examples of how passing certain non-string values into requests for Fluent Bit’s monitoring API can lead to memory corruption issues, crashes, and potential information disclosure.
– The most immediate risks are related to DoS and information leakage. While RCE is possible, it is considered difficult to exploit and time-intensive.
– Tenable has recommended that cloud providers upgrade to version 3.0.4 of Fluent Bit, or at least limit access to the vulnerable endpoints. Disabling the component is also suggested as a mitigation measure.
– Major cloud providers have been notified of the issue and are expected to initiate internal triage processes.

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