What is CVE-2020-35756?

CVE-2020-35756 is a high-severity vulnerability in Librewireless Ls9, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2021-05-03.

How severe is CVE-2020-35756?

High severity. CVSS v3 base score is 7.5 out of 10.

Auth bypass in Librewireless Ls9

CVE-2020-35756

An issue was discovered on Libre Wireless LS9 LS1.5/p7040 devices. There is a luci_service GETPASS Configuration Password Information Leak. The luci_service daemon running on port 7777 does not require authentication to return the device configuration password in cleartext when using the GETPASS command. As such, any unauthenticated person with access to port 7777 on the device will be able to leak the user's personal device configuration password by issuing the GETPASS command.

Vulnerability class: Broken Authentication

EPSS: 0.012 (65.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Librewireless Ls9
Librewireless Ls9_firmware — versions 7040
N/a — versions n/a

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-35756?: CVE-2020-35756 is a high-severity vulnerability in Librewireless Ls9, classified under Missing Authentication for Critical Function. CVSS score: 7.5/10. Published 2021-05-03.
How severe is CVE-2020-35756?: High severity. CVSS v3 base score is 7.5 out of 10.