Paper/Archive/CVE-2022-39379

CVE-2022-39379

fluent fluentd — Fluentd vulnerable to remote code execution due to insecure deserialization (in non-default configuration)

EPSS 45%CVSS 9.8

critical.is priorityof 100

CVSS 9.8 (NVD)9.8 / 10 × 3029.4 Not in CISA KEV+300.0 EPSS percentile 98.8.988 × 2019.8 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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`.

Affected

ProductAffectedFixed inSource

fluentd>= 1.13.2, < 1.15.3–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

GitHub_M (CNA)3.1CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N

CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: partial

References

refgithub.com/fluent/fluentd/security/advisories/GHSA-fppq-mj76-fpj2 refgithub.com/fluent/fluentd/commit/48e5b85dab1b6d4c273090d538fc11b3f2fd8135 advisorylists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MYD5QV66OLDHES6IKVYYM3Y3YID3VVCO