gsd-2019-15803
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. Through an undocumented sequence of keypresses, undocumented functionality is triggered. A diagnostics shell is triggered via CTRL-ALT-t, which prompts for the password returned by fds_sys_passDebugPasswd_ret(). The firmware contains access control checks that determine if remote users are allowed to access this functionality. The function that performs this check (fds_sys_remoteDebugEnable_ret in libfds.so) always return TRUE with no actual checks performed. The diagnostics menu allows for reading/writing arbitrary registers and various other configuration parameters which are believed to be related to the network interface chips.
Aliases
Aliases
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"id": "GSD-2019-15803"
},
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"exploitCode": "unknown",
"remediation": "unknown",
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"modified": "2023-12-13T01:23:38.789255Z",
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"lastModifiedDate": "2020-08-24T17:37Z",
"publishedDate": "2019-11-14T21:15Z"
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}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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