Fluentd up to 1.15.2 JSON deserialization

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Fluentd up to 1.15.2. Affected by this vulnerability is an unknown functionality of the component JSON Handler. The manipulation leads to deserialization. This vulnerability is referenced as CVE-2022-39379. Remote exploitation of the attack is possible. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Fluentd up to 1.15.2. It has been rated as problematic. This issue affects some unknown functionality of the component JSON Handler. The manipulation with an unknown input leads to a deserialization vulnerability. Using CWE to declare the problem leads to CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. Impacted is confidentiality. The summary by CVE is:

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`.

The weakness was published 11/02/2022 as GHSA-fppq-mj76-fpj2. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2022-39379 since 09/02/2022. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 1.15.3 eliminates this vulnerability. Applying the patch 48e5b85dab1b6d4c273090d538fc11b3f2fd8135 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 3.1
VulDB Temp Score: 3.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 3.1
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Deserialization
CWE: CWE-502 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Fluentd 1.15.3
Patch: 48e5b85dab1b6d4c273090d538fc11b3f2fd8135

Timelineinfo

09/02/2022 🔍
11/02/2022 +61 days 🔍
11/02/2022 +0 days 🔍
12/03/2022 +31 days 🔍

Sourcesinfo

Advisory: GHSA-fppq-mj76-fpj2
Status: Confirmed

CVE: CVE-2022-39379 (🔍)
GCVE (CVE): GCVE-0-2022-39379
GCVE (VulDB): GCVE-100-212795

Entryinfo

Created: 11/02/2022 15:59
Updated: 12/03/2022 14:55
Changes: 11/02/2022 15:59 (51), 12/03/2022 14:55 (12)
Complete: 🔍
Cache ID: 216::103

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