Double Free in Treasuredata Fluent Bit
CVE-2021-36088
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).
Vulnerability class: Double Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.024 (83.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: 0.000
Affected products
Weakness classification (CWE)
References
- bugs.chromium.org/p/oss-fuzz/issues/detail (Exploit, Patch, Third Party Advisory)
- github.com/google/oss-fuzz-vulns/blob/main/vulns/fluent-bit/OSV-2021-702.yaml (Third Party Advisory)
- github.com/fluent/fluent-bit/commit/22346a74c07ceb90296be872be2d53eb92252a54 (Patch, Third Party Advisory)
- github.com/fluent/fluent-bit/pull/3453 (Patch, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-36088?
- CVE-2021-36088 is a critical-severity vulnerability in Treasuredata Fluent Bit, classified under Double Free. CVSS score: 9.8/10. Published 2021-07-01.
- How severe is CVE-2021-36088?
- Critical severity. CVSS v3 base score is 9.8 out of 10.