CVE-2021-36088

Public Exploit

Description

Fluent Bit (aka fluent-bit) 1.7.0 through 1.7.4 has a double free in flb_free (called from flb_parser_json_do and flb_parser_do).

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.36%
Third-Party Advisory chromium.org Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33750 exploit third party advisory patch
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/fluent-bit/OSV-2021-702.yaml third party advisory
https://github.com/fluent/fluent-bit/commit/22346a74c07ceb90296be872be2d53eb92252a54 third party advisory patch
https://github.com/fluent/fluent-bit/pull/3453 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-36088?
CVE-2021-36088 has been scored as a critical severity vulnerability.
How to fix CVE-2021-36088?
To fix CVE-2021-36088, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-36088 being actively exploited in the wild?
It is possible that CVE-2021-36088 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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