Buffer overflow in Fluent Bit
CVE-2024-4323
A memory corruption vulnerability in Fluent Bit versions 2.0.7 thru 3.0.3. This issue lies in the embedded http server’s parsing of trace requests and may result in denial of service conditions, information disclosure, or remote code execution.
Vulnerability class: Buffer Overflow
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: 0.272 (98.0th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 98th percentile — 98.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.272 · newest: 0.272 · change: 0.000
Affected products
- Fluent Bit — versions 2.0.7
- Treasuredata Fluent Bit
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tenable.com/security/research/tra-2024-17 (Patch, Third Party Advisory)
- github.com/fluent/fluent-bit/commit/9311b43a258352797af40749ab31a63c32acfd04 (Patch)
- af854a3a-2127-422b-91ae-364da2661108 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2024-4323?
- CVE-2024-4323 is a critical-severity vulnerability in Fluent Bit, classified under Heap-based Buffer Overflow. CVSS score: 9.8/10. Published 2024-05-20.
- How severe is CVE-2024-4323?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2024-4323 known to be exploited?
- 7 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.