Vulnerability Details CVE-2021-46878
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 7.3%
CVSS Severity
CVSS v3 Score 7.8
References
Products affected by CVE-2021-46878
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cpe:2.3:a:treasuredata:fluent_bit:1.7.1