CVE-2021-46879 — Out-of-bounds Write in Fluent BIT

CWE-787 — Out-of-bounds Write3 documents3 sources
Severity
7.8HIGHNVD
EPSS
0.1%
top 73.70%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
4
Treasuredata Fluent BITMsrc CBL Mariner 1.0 ARMMsrc CBL Mariner 1.0 X64+1 more
Timeline
PublishedApr 11

Description

An issue was discovered in Treasure Data Fluent Bit 1.7.1, a wrong variable is used to get the msgpack data resulting in a heap overflow in flb_msgpack_gelf_value_ext. An attacker can craft a malicious file and tick the victim to open the file with the software, triggering a heap overflow and execute arbitrary code on the target system.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 1.8 | Impact: 5.9

Affected Packages4 packages

Patches

Patch: bugs.chromium.org ↗Patch: github.com ↗Patch: bugs.chromium.org ↗

🔴Vulnerability Details

1
GHSA
GHSA-m8h6-32jj-7hxp: An issue was discovered in Treasure Data Fluent Bit 1↗2023-04-11
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📋Vendor Advisories

1
Microsoft
An issue was discovered in Treasure Data Fluent Bit 1.7.1 a wrong variable is used to get the msgpack data resulting in a heap overflow in flb_msgpack_gelf_value_ext. An attacker can craft a malicious↗2023-04-11
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CVE-2021-46879 — Out-of-bounds Write in Fluent BIT | cvebase