PT-2021-17284 · Fiberhome · Fiberhome Hg6245D

Pierre Kim · Published 2021-02-10 · Updated 2021-02-12 · CVE-2021-27165

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: FiberHome HG6245D devices through RP2613

Description: An issue was discovered where the telnet daemon on port 23/tcp can be abused with the gpon/gpon credentials.

Recommendations: For FiberHome HG6245D devices through RP2613, consider disabling the telnet daemon on port 23/tcp as a temporary workaround until a patch is available. Restrict access to the telnet service to minimize the risk of exploitation. Avoid using the default gpon/gpon credentials for the telnet daemon.

Exploit

Fix

Using Hardcoded Credentials

Weakness Enumeration

CWE-798

Related Identifiers

CVE-2021-27165

Affected Products

Fiberhome Hg6245D

References · 4

• 🔥 https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-linux-hardcoded-credentials · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-27165 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27165 · Vendor Advisory
• https://t.me/cvenotify/9849 · Telegram Post