high7.5
CVE-2019-15801
An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0.
Impact
An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. The firmware image contains encrypted passwords that are used to authenticate users wishing to access a diagnostics or password-recovery menu. Using the hardcoded cryptographic key found elsewhere in the firmware, these passwords can be decrypted. This is related to fds_sys_passDebugPasswd_ret() and fds_sys_passRecoveryPasswd_ret() in libfds.so.0.0.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Zyxel | Gs1900-8 Firmware | before 2.50\(aahh.0\)c0 |
| Zyxel | Gs1900-8hp Firmware | before 2.50\(aahi.0\)c0 |
| Zyxel | Gs1900-10hp Firmware | before 2.50\(aazi.0\)c0 |
| Zyxel | Gs1900-16 Firmware | before 2.50\(aahj.0\)c0 |
| Zyxel | Gs1900-24e Firmware | before 2.50\(aahk.0\)c0 |
| Zyxel | Gs1900-24 Firmware | before 2.50\(aahl.0\)c0 |
| Zyxel | Gs1900-24hp Firmware | before 2.50\(aahm.0\)c0 |
| Zyxel | Gs1900-48 Firmware | before 2.50\(aahn.0\)c0 |
| Zyxel | Gs1900-48hp Firmware | before 2.50\(aaho.0\)c0 |