Vulnerability CVE-2021-27186
Published: 2021-02-10

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.

Type:

CWE-476

 (NULL Pointer Dereference)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Treasuredata -> Fluent bit 

 References:
https://github.com/fluent/fluent-bit/issues/3044
https://github.com/fluent/fluent-bit/pull/3045
https://github.com/fluent/fluent-bit/pull/3047
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