#VU49223 Out-of-bounds write in Fluent Bit - CVE-2020-35963
Published: January 3, 2021 / Updated: January 4, 2021
Vulnerability identifier: #VU49223
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2020-35963
CWE-ID: CWE-787
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Fluent Bit
Fluent Bit
Software vendor:
fluentbit.io
fluentbit.io
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a boundary error when processing untrusted input within the flb_gzip_compress() function in flb_gzip.c. A remote attacker can create a specially crafted file, trick the victim into opening it using the affected software, trigger out-of-bounds write and execute arbitrary code on the target system.
Remediation
Install updates from vendor's website.