CVE-2022-39379: Fluentd vulnerable to remote code execution due to insecure deserialization (in non-default configuration)
First published: Wed Nov 02 2022(Updated: )
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`.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cogent Datahub | >=1.13.2<1.15.3 | |
| Red Hat Fedora | =37 |
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Reference Links
- https://github.com/fluent/fluentd/commit/48e5b85dab1b6d4c273090d538fc11b3f2fd8135
- https://github.com/fluent/fluentd/security/advisories/GHSA-fppq-mj76-fpj2
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MYD5QV66OLDHES6IKVYYM3Y3YID3VVCO/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYD5QV66OLDHES6IKVYYM3Y3YID3VVCO/
Frequently Asked Questions
What is the severity of CVE-2022-39379?
CVE-2022-39379 is classified as a critical severity vulnerability due to its potential for remote code execution.
How do I fix CVE-2022-39379?
To fix CVE-2022-39379, it is recommended to upgrade Fluentd to versions 1.15.4 or later and ensure default configurations are used.
Who is affected by CVE-2022-39379?
CVE-2022-39379 affects Fluentd versions from 1.13.2 to 1.15.3 and Fedora version 37.
Can CVE-2022-39379 allow unauthorized access to my system?
Yes, CVE-2022-39379 allows unauthenticated attackers to execute arbitrary code on affected systems.
What configurations are at risk with CVE-2022-39379?
Non-default configurations of Fluentd are at risk with CVE-2022-39379, potentially exposing systems to attacks.
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/weakness
- agent/remedy
- agent/last-modified-date
- agent/author
- agent/references
- agent/title
- agent/severity
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/fluentd
- canonical/cogent datahub
- version/cogent datahub/1.13.2
- vendor/fedoraproject
- canonical/red hat fedora
- version/red hat fedora/37