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CVE-2021-36088

Good to know:

Date: June 30, 2021

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).

Language: C

Severity Score

9.8

Related Resources (6)

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-36088

Url: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=33750

Url: https://github.com/google/oss-fuzz-vulns/blob/main/vulns/fluent-bit/OSV-2021-702.yaml

Url: https://github.com/fluent/fluent-bit/commit/22346a74c07ceb90296be872be2d53eb92252a54

Url: https://github.com/fluent/fluent-bit/pull/3453

Url: https://www.mend.io/vulnerability-database/CVE-2021-36088

Severity Score

9.8

Weakness Type (CWE)

Double Free

CWE-415

Top Fix

Upgrade Version

Upgrade to version v1.7.5

CVSS v3.1

Base Score:	9.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	7.5
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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