cve-2019-15804
Vulnerability from cvelistv5
Published
2019-11-14 20:15
Modified
2024-08-05 00:56
Severity ?
Summary
An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. By sending a signal to the CLI process, undocumented functionality is triggered. Specifically, a menu can be triggered by sending the SIGQUIT signal to the CLI application (e.g., through CTRL+\ via SSH). The access control check for this menu does work and prohibits accessing the menu, which contains "Password recovery for specific user" options. The menu is believed to be accessible using a serial console.
References
cve@mitre.orghttps://jasper.la/exploring-zyxel-gs1900-firmware-with-ghidra.htmlExploit, Third Party Advisory
cve@mitre.orghttps://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtmlVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://jasper.la/exploring-zyxel-gs1900-firmware-with-ghidra.htmlExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtmlVendor Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

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}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.