fluent/fluentd · Security
fluentd vulnerable to remote code execution due to insecure deserialization (in non-default configuration)
- GHSA ID
- GHSA-fppq-mj76-fpj2
- CVE ID
- CVE-2022-39379
- Severity
- low
- Published
- Updated
- CVSS
- 3.1 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
- CVSS v3
- 3.1 · CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Description
Impact
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.
Patches
v1.15.3
Workarounds
Do not use FLUENT_OJ_OPTION_MODE=object.
References
- GHSL-2022-067
CWEs
- CWE-502 · Deserialization of Untrusted Data
References
- https://github.com/fluent/fluentd/security/advisories/GHSA-fppq-mj76-fpj2 ↗
- https://github.com/fluent/fluentd/commit/48e5b85dab1b6d4c273090d538fc11b3f2fd8135 ↗
- https://nvd.nist.gov/vuln/detail/CVE-2022-39379 ↗
- https://github.com/rubysec/ruby-advisory-db/blob/master/gems/fluentd/CVE-2022-39379.yml ↗
- https://lists.fedoraproject.org/archives/list/[email protected]/message/MYD5QV66OLDHES6IKVYYM3Y3YID3VVCO/ ↗
- https://github.com/advisories/GHSA-fppq-mj76-fpj2 ↗