PT-2019-6330 · Fluentd · Fluentd+1

Xu-Xiang · Published 2019-12-10 · Updated 2025-06-09 · CVE-2020-21514

Positive Technologies (AI Summary)

CVSS v2.0

9.0

High

Base vector

AV:N/AC:L/Au:S/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions Fluent Fluentd version 1.8.0 Fluent-ui version 1.2.2

Description The issue is related to the use of a default password in Fluent Fluentd and its browser manager fluentd-ui, allowing attackers to gain escalated privileges and execute arbitrary code. This can be exploited by a remote attacker.

Recommendations For Fluent Fluentd version 1.8.0, change the default password to a unique and strong password to prevent exploitation. For Fluent-ui version 1.2.2, update the configuration to use a custom password instead of the default one to mitigate the risk of arbitrary code execution.

Exploit

Fix

Incorrect Default Permissions

Weakness Enumeration

CWE-276

CWE-259

Related Identifiers

BDU:2023-02267

BIT-FLUENTD-2020-21514

CVE-2020-21514

GHSA-WRXF-X8RM-6GGG

Affected Products

Fluentd

Fluent-Ui

References · 13

• 🔥 https://github.com/fluent/fluentd/issues/2722 · Exploit
• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/fluentd-ui/CVE-2020-21514.yml · Exploit
• 🔥 https://github.com/rubysec/ruby-advisory-db/blob/master/gems/fluentd/CVE-2020-21514.yml · Exploit
• https://osv.dev/vulnerability/GHSA-wrxf-x8rm-6ggg · Vendor Advisory
• https://osv.dev/vulnerability/BIT-fluentd-2020-21514 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-21514 · Security Note
• https://osv.dev/vulnerability/CVE-2020-21514 · Vendor Advisory
• https://bdu.fstec.ru/vul/2023-02267 · Security Note
• https://github.com/fluent/fluentd-ui/issues/295 · Note
• https://github.com/fluent/fluentd-ui · Note
• https://access.redhat.com/security/cve/cve-2020-21514 · Note
• https://t.me/cvenotify/125091 · Telegram Post
• https://vuldb.com/ru/?id.224894 · Note