Description
An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. The firmware hashes and encrypts passwords using a hardcoded cryptographic key in sal_util_str_encrypt() in libsal.so.0.0. The parameters (salt, IV, and key data) are used to encrypt and decrypt all passwords using AES256 in CBC mode. With the parameters known, all previously encrypted passwords can be decrypted. This includes the passwords that are part of configuration backups or otherwise embedded as part of the firmware.
Published: 2019-11-14
Score: 5.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Advisories
Source ID Title
EUVD EUVD EUVD-2019-6721 An issue was discovered on Zyxel GS1900 devices with firmware before 2.50(AAHH.0)C0. The firmware hashes and encrypts passwords using a hardcoded cryptographic key in sal_util_str_encrypt() in libsal.so.0.0. The parameters (salt, IV, and key data) are used to encrypt and decrypt all passwords using AES256 in CBC mode. With the parameters known, all previously encrypted passwords can be decrypted. This includes the passwords that are part of configuration backups or otherwise embedded as part of the firmware.
History

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Subscriptions

Zyxel Gs1900-10hp Gs1900-10hp Firmware Gs1900-16 Gs1900-16 Firmware Gs1900-24 Gs1900-24 Firmware Gs1900-24e Gs1900-24e Firmware Gs1900-24hp Gs1900-24hp Firmware Gs1900-48 Gs1900-48 Firmware Gs1900-48hp Gs1900-48hp Firmware Gs1900-8 Gs1900-8 Firmware Gs1900-8hp Gs1900-8hp Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2024-08-05T00:56:22.467Z

Reserved: 2019-08-29T00:00:00.000Z

Link: CVE-2019-15802

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2019-11-14T21:15:11.797

Modified: 2024-11-21T04:29:29.790

Link: CVE-2019-15802

cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses