Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Treasuredata | Fluent Bit | 1.7.1 |
Related Weaknesses (CWE)
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26851ExploitIssue TrackingPatch
- https://github.com/fluent/fluent-bit/pull/3100Patch
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26851ExploitIssue TrackingPatch
- https://github.com/fluent/fluent-bit/pull/3100Patch
FAQ
What is CVE-2021-46879?
CVE-2021-46879 is a vulnerability with a CVSS score of 7.8 (HIGH). 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 maliciou...
How severe is CVE-2021-46879?
CVE-2021-46879 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-46879?
Check the references section above for vendor advisories and patch information. Affected products include: Treasuredata Fluent Bit.