CVE-2021-46878 - Vulnerability Details - OpenCVE

An issue was discovered in Treasure Data Fluent Bit 1.7.1, erroneous parsing in flb_pack_msgpack_to_json_format leads to type confusion bug that interprets whatever is on the stack as msgpack maps and arrays, leading to use-after-free. This can be used by an attacker to craft a specially craft file and trick the victim opening it using the affect software, triggering use-after-free and execute arbitrary code on the target system.

No CVSS v4.0

Attack Vector Local

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00032.

Exploitation poc

Automatable no

Technical Impact total

Vendors	Products
Treasuredata	Fluent Bit

Configuration 1 [-]

cpe:2.3:a:treasuredata:fluent_bit:1.7.1:*:*:*:*:*:*:*

No data.

No data.

Advisories

Source	ID	Title
EUVD	EUVD-2021-33528	An issue was discovered in Treasure Data Fluent Bit 1.7.1, erroneous parsing in flb_pack_msgpack_to_json_format leads to type confusion bug that interprets whatever is on the stack as msgpack maps and arrays, leading to use-after-free. This can be used by an attacker to craft a specially craft file and trick the victim opening it using the affect software, triggering use-after-free and execute arbitrary code on the target system.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27742
https://github.com/fluent/fluent-bit/pull/3115

History

Tue, 11 Feb 2025 21:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2023-04-11T00:00:00.000Z

Updated: 2025-02-11T21:01:09.004Z

Reserved: 2023-03-29T00:00:00.000Z

Link: CVE-2021-46878

Vulnrichment

Updated: 2024-08-04T05:17:42.825Z

NVD

Status : Modified

Published: 2023-04-11T18:15:58.340

Modified: 2025-02-11T21:15:08.843

Link: CVE-2021-46878

Redhat

No data.

OpenCVE Enrichment

No data.

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