CVE-2019-15801
First published: Thu Nov 14 2019(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zyxel GS1900-8 firmware | <2.50\(aahh.0\)c0 | |
| Zyxel GS1900-8 | ||
| Zyxel GS1900-8HP firmware | <2.50\(aahi.0\)c0 | |
| Zyxel GS1900-8HP firmware | ||
| Zyxel GS1900-10HP firmware | <2.50\(aazi.0\)c0 | |
| Zyxel GS1900-10HP firmware | ||
| Zyxel GS1900-16 | <2.50\(aahj.0\)c0 | |
| Zyxel GS1900-16 Firmware | ||
| Zyxel GS1900-24E Firmware | <2.50\(aahk.0\)c0 | |
| Zyxel GS1900-24E Firmware | ||
| ZyXEL GS1900-24 firmware | <2.50\(aahl.0\)c0 | |
| Zyxel GS1900-24E Firmware | ||
| Zyxel GS1900-24HPv2 | <2.50\(aahm.0\)c0 | |
| Zyxel GS1900-24HP Firmware | ||
| Zyxel GS1900-48 Firmware | <2.50\(aahn.0\)c0 | |
| Zyxel GS1900-48HP Firmware | ||
| Zyxel GS1900-48HPv2 Firmware | <2.50\(aaho.0\)c0 | |
| Zyxel GS1900-48HP Firmware |
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Reference Links
Frequently Asked Questions
What is CVE-2019-15801?
CVE-2019-15801 is a vulnerability found on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0.
What is the severity of CVE-2019-15801?
The severity of CVE-2019-15801 is high, with a severity value of 7.5.
How does CVE-2019-15801 affect Zyxel GS1900 devices?
CVE-2019-15801 allows attackers to access a diagnostics or password-recovery menu on Zyxel GS1900 devices.
How can I fix CVE-2019-15801?
To fix CVE-2019-15801, update the firmware of Zyxel GS1900 devices to version 2.50(AAHH.0)C0 or later.
Where can I find more information about CVE-2019-15801?
You can find more information about CVE-2019-15801 at the following links: [link1](https://jasper.la/exploring-zyxel-gs1900-firmware-with-ghidra.html), [link2](https://www.zyxel.com/support/gs1900-switch-vulnerabilities.shtml).
- agent/references
- agent/type
- collector/mitre-cve
- source/MITRE
- agent/severity
- agent/last-modified-date
- agent/weakness
- agent/author
- agent/description
- agent/first-publish-date
- agent/event
- agent/source
- agent/tags
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/zyxel
- canonical/zyxel gs1900-8 firmware
- canonical/zyxel gs1900-8
- canonical/zyxel gs1900-8hp firmware
- canonical/zyxel gs1900-10hp firmware
- canonical/zyxel gs1900-16
- canonical/zyxel gs1900-16 firmware
- canonical/zyxel gs1900-24e firmware
- canonical/zyxel gs1900-24 firmware
- canonical/zyxel gs1900-24hpv2
- canonical/zyxel gs1900-24hp firmware
- canonical/zyxel gs1900-48 firmware
- canonical/zyxel gs1900-48hp firmware
- canonical/zyxel gs1900-48hpv2 firmware