CVE-2019-15802 - CVE House
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Status published Medium CVE-2019-15802

An issue was discovered on Zyxel GS1900 devices with firmware...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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Critical 9.1

Affected Vendor

Affected Software

gs1900-8 firmware, gs1900-8hp firmware, gs1900-10hp firmware, gs1900-16 firmware, gs1900-24e firmware, gs1900-24 firmware, gs1900-24hp firmware, gs1900-48 firmware, gs1900-48hp firmware
Vulnerable Versions:
0

Timeline

Official Publish: November 14th, 2019
Last Modified: August 5th, 2024
Added to House: July 20th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.