CVE-2020-28169
CVE-2020-28169 is a high-severity vulnerability in Td-agent-builder Project Td-agent-builder with a CVSS 3.x base score of 7.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.
Key facts
- Severity: High (CVSS 3.x base score 7.0)
- CVSS v2: 6.9
- EPSS exploit prediction: 1% (64th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-732
- Affected product: Td-agent-builder Project Td-agent-builder
- Published:
- Last modified:
Description
The td-agent-builder plugin before 2020-12-18 for Fluentd allows attackers to gain privileges because the bin directory is writable by a user account, but a file in bin is executed as NT AUTHORITY\SYSTEM.
Frequently asked questions
- What is CVE-2020-28169?
- The td-agent-builder plugin before 2020-12-18 for Fluentd allows attackers to gain privileges because the bin directory is writable by a user account, but a file in bin is executed as NT AUTHORITY\SYSTEM.
- How severe is CVE-2020-28169?
- CVE-2020-28169 has a CVSS 3.x base score of 7.0, rated high severity. It is exploitable over local access with high attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2020-28169 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (64th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2020-28169?
- CVE-2020-28169 primarily affects Td-agent-builder Project Td-agent-builder. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2020-28169?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- When was CVE-2020-28169 published?
- CVE-2020-28169 was published on 2020-12-24 and last updated on 2026-06-17.
References
- http://packetstormsecurity.com/files/160791/Fluentd-TD-agent-4.0.1-Insecure-Folder-Permission.html
- https://docs.fluentd.org/installation/install-by-msi
- https://github.com/fluent-plugins-nursery/td-agent-builder/pull/247/commits/6f9cb6393392d62caa99907c0ebbcbab6b94a3f1
- https://github.com/fluent/fluentd/issues/3201
- https://github.com/kenhys/td-agent-builder/commit/eec6e2dedf12f2e0c01c2bbe7b8c15b639b3b938
- https://td-agent-package-browser.herokuapp.com/4/windows
- https://www.debian.org/security/2021/dsa-4949
- https://www.fluentd.org/
Affected products (2)
- cpe:2.3:a:td-agent-builder_project:td-agent-builder:*:*:*:*:*:fluentd:*:*
- cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
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