CVE-2021-27186

Public Exploit

Description

Fluent Bit 1.6.10 has a NULL pointer dereference when an flb_malloc return value is not validated by flb_avro.c or http_server/api/v1/metrics.c.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.41%
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://github.com/fluent/fluent-bit/issues/3044 third party advisory exploit
https://github.com/fluent/fluent-bit/pull/3045 exploit third party advisory patch
https://github.com/fluent/fluent-bit/pull/3047 third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2021-27186?
CVE-2021-27186 has been scored as a high severity vulnerability.
How to fix CVE-2021-27186?
To fix CVE-2021-27186, 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-2021-27186 being actively exploited in the wild?
It is possible that CVE-2021-27186 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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