Vulnerability Monitor

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CVE-2019-15804

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.

Published

2019-11-14T21:15:11.953

Last Modified

2024-11-21T04:29:30.103

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

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

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: PARTIAL
  • Availability Impact: NONE
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    NVD-CWE-noinfo
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System zyxel gs1900-8_firmware < 2.50\(aahh.0\)c0 Yes
Hardware zyxel gs1900-8 - No
Operating System zyxel gs1900-8hp_firmware < 2.50\(aahi.0\)c0 Yes
Hardware zyxel gs1900-8hp - No
Operating System zyxel gs1900-10hp_firmware < 2.50\(aazi.0\)c0 Yes
Hardware zyxel gs1900-10hp - No
Operating System zyxel gs1900-16_firmware < 2.50\(aahj.0\)c0 Yes
Hardware zyxel gs1900-16 - No
Operating System zyxel gs1900-24e_firmware < 2.50\(aahk.0\)c0 Yes
Hardware zyxel gs1900-24e - No
Operating System zyxel gs1900-24_firmware < 2.50\(aahl.0\)c0 Yes
Hardware zyxel gs1900-24 - No
Operating System zyxel gs1900-24hp_firmware < 2.50\(aahm.0\)c0 Yes
Hardware zyxel gs1900-24hp - No
Operating System zyxel gs1900-48_firmware < 2.50\(aahn.0\)c0 Yes
Hardware zyxel gs1900-48 - No
Operating System zyxel gs1900-48hp_firmware < 2.50\(aaho.0\)c0 Yes
Hardware zyxel gs1900-48hp - No
References