CVE-2019-15799

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Summary

CVECVE-2019-15799
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-11-14 21:15:00 UTC
Updated2019-11-21 18:15:00 UTC
DescriptionAn 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.

Risk And Classification

Problem Types: CWE-269

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Zyxel Gs1900-10hp - All All All
Hardware Zyxel Gs1900-10hp - All All All
Operating System Zyxel Gs1900-10hp Firmware All All All All
Operating System Zyxel Gs1900-10hp Firmware All All All All
Hardware Zyxel Gs1900-16 - All All All
Hardware Zyxel Gs1900-16 - All All All
Operating System Zyxel Gs1900-16 Firmware All All All All
Operating System Zyxel Gs1900-16 Firmware All All All All
Hardware Zyxel Gs1900-24 - All All All
Hardware Zyxel Gs1900-24 - All All All
Hardware Zyxel Gs1900-24e - All All All
Hardware Zyxel Gs1900-24e - All All All
Operating System Zyxel Gs1900-24e Firmware All All All All
Operating System Zyxel Gs1900-24e Firmware All All All All
Hardware Zyxel Gs1900-24hp - All All All
Hardware Zyxel Gs1900-24hp - All All All
Operating System Zyxel Gs1900-24hp Firmware All All All All
Operating System Zyxel Gs1900-24hp Firmware All All All All
Operating System Zyxel Gs1900-24 Firmware All All All All
Operating System Zyxel Gs1900-24 Firmware All All All All
Hardware Zyxel Gs1900-48 - All All All
Hardware Zyxel Gs1900-48 - All All All
Hardware Zyxel Gs1900-48hp - All All All
Hardware Zyxel Gs1900-48hp - All All All
Operating System Zyxel Gs1900-48hp Firmware All All All All
Operating System Zyxel Gs1900-48hp Firmware All All All All
Operating System Zyxel Gs1900-48 Firmware All All All All
Operating System Zyxel Gs1900-48 Firmware All All All All
Hardware Zyxel Gs1900-8 - All All All
Hardware Zyxel Gs1900-8 - All All All
Hardware Zyxel Gs1900-8hp - All All All
Hardware Zyxel Gs1900-8hp - All All All
Operating System Zyxel Gs1900-8hp Firmware All All All All
Operating System Zyxel Gs1900-8hp Firmware All All All All
Operating System Zyxel Gs1900-8 Firmware All All All All
Operating System Zyxel Gs1900-8 Firmware All All All All

References

ReferenceSourceLinkTags
Exploring Zyxel GS1900 firmware with Ghidra - [ jasper.la ] MISC jasper.la Exploit, Third Party Advisory
Zyxel security advisory for GS1900 switch vulnerabilities | Zyxel CONFIRM www.zyxel.com Vendor Advisory
Zyxel GS1900 administrative access vulnerability (CVE-2019-15799) on Vimeo MISC vimeo.com Exploit, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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