CVE-2021-36088 Information

Description

Fluent Bit (aka fluent-bit) 1.7.0 through 1.74 has a double free in flb_free (called from flb_parser_json_do and flb_parser_do).

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8