Vulnerability Description
flb_gzip_compress in flb_gzip.c in Fluent Bit before 1.6.4 has an out-of-bounds write because it does not use the correct calculation of the maximum gzip data-size expansion.
CVSS Score
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Treasuredata | Fluent Bit | < 1.6.4 |
| Linux | Linux Kernel | - |
Related Weaknesses (CWE)
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27261ExploitIssue TrackingThird Party Advisory
- https://fluentbit.io/announcements/v1.6.4/Release NotesVendor Advisory
- https://github.com/fluent/fluent-bit/commit/cadff53c093210404aed01c4cf586adb8caaPatchThird Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=27261ExploitIssue TrackingThird Party Advisory
- https://fluentbit.io/announcements/v1.6.4/Release NotesVendor Advisory
- https://github.com/fluent/fluent-bit/commit/cadff53c093210404aed01c4cf586adb8caaPatchThird Party Advisory
FAQ
What is CVE-2020-35963?
CVE-2020-35963 is a vulnerability with a CVSS score of 7.8 (HIGH). flb_gzip_compress in flb_gzip.c in Fluent Bit before 1.6.4 has an out-of-bounds write because it does not use the correct calculation of the maximum gzip data-size expansion.
How severe is CVE-2020-35963?
CVE-2020-35963 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-2020-35963?
Check the references section above for vendor advisories and patch information. Affected products include: Treasuredata Fluent Bit, Linux Linux Kernel.