9

CVE-2019-15799

Exploit

An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. User accounts created through the web interface of the device, when given non-admin level privileges, have the same level of privileged access as administrators when connecting to the device via SSH (while their permissions via the web interface are in fact restricted). This allows normal users to obtain the administrative password by running the tech-support command via the CLI: this contains the encrypted passwords for all users on the device. As these passwords are encrypted using well-known and static parameters, they can be decrypted and the original passwords (including the administrator password) can be obtained.

Daten sind bereitgestellt durch National Vulnerability Database (NVD)
ZyxelGs1900-8 Firmware Version < 2.50\(aahh.0\)c0
   ZyxelGs1900-8 Version-
ZyxelGs1900-8hp Firmware Version < 2.50\(aahi.0\)c0
   ZyxelGs1900-8hp Version-
ZyxelGs1900-10hp Firmware Version < 2.50\(aazi.0\)c0
   ZyxelGs1900-10hp Version-
ZyxelGs1900-16 Firmware Version < 2.50\(aahj.0\)c0
   ZyxelGs1900-16 Version-
ZyxelGs1900-24e Firmware Version < 2.50\(aahk.0\)c0
   ZyxelGs1900-24e Version-
ZyxelGs1900-24 Firmware Version < 2.50\(aahl.0\)c0
   ZyxelGs1900-24 Version-
ZyxelGs1900-24hp Firmware Version < 2.50\(aahm.0\)c0
   ZyxelGs1900-24hp Version-
ZyxelGs1900-48 Firmware Version < 2.50\(aahn.0\)c0
   ZyxelGs1900-48 Version-
ZyxelGs1900-48hp Firmware Version < 2.50\(aaho.0\)c0
   ZyxelGs1900-48hp Version-
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.4% 0.576
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd@nist.gov 9 8 10
AV:N/AC:L/Au:S/C:C/I:C/A:C
CWE-269 Improper Privilege Management

The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.