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| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| fluentd | rubygems | <= 1.8.0 | |
| fluentd-ui | rubygems | <= 1.2.2 |
The vulnerability stems from the use of a default password ('admin'/'changeme') in Fluentd-ui, which is not enforced to be changed post-deployment. While the advisory doesn't explicitly name specific functions, the presence of this flaw implies that the user initialization or authentication setup code in Fluentd-ui is responsible for creating/administering the default credentials. Attackers leverage this to gain access and exploit functionalities like the in_exec plugin (enabled by default in Fluentd) for code execution. The CWE-276 (Incorrect Default Permissions) further supports this analysis, as the system ships with insecure default authentication settings.
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