CVE-2022-39379
LOWFluentd < 1.15.3 - Insecure Deserialization
Title source: ruleDescription
Fluentd collects events from various data sources and writes them to files, RDBMS, NoSQL, IaaS, SaaS, Hadoop and so on. A remote code execution (RCE) vulnerability in non-default configurations of Fluentd allows unauthenticated attackers to execute arbitrary code via specially crafted JSON payloads. Fluentd setups are only affected if the environment variable `FLUENT_OJ_OPTION_MODE` is explicitly set to `object`. Please note: The option FLUENT_OJ_OPTION_MODE was introduced in Fluentd version 1.13.2. Earlier versions of Fluentd are not affected by this vulnerability. This issue was patched in version 1.15.3. As a workaround do not use `FLUENT_OJ_OPTION_MODE=object`.
Scores
CVSS v3
3.1
EPSS
0.0499
EPSS Percentile
89.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Classification
CWE
CWE-502
Status
published
Affected Products (3)
fluentd/fluentd
< 1.15.3
fedoraproject/fedora
rubygems/fluentd
< 1.15.3RubyGems
Timeline
Published
Nov 02, 2022
Tracked Since
Feb 18, 2026