PT-2021-17288 · Fiberhome · Fiberhome An5506-04-F

Pierre Kim · Published 2021-02-10 · Updated 2021-02-12 · CVE-2021-27169

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 AN5506-04-FA devices with firmware RP2631

Description: An issue was discovered on FiberHome AN5506-04-FA devices. There is a gepon password for the gepon account.

Recommendations: For FiberHome AN5506-04-FA devices with firmware RP2631, consider changing the gepon password for the gepon account to mitigate the risk. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Using Hardcoded Credentials

Weakness Enumeration

CWE-798

Related Identifiers

CVE-2021-27169

Affected Products

Fiberhome An5506-04-F

References · 5

• 🔥 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-2021-27169 · Security Note
• https://osv.dev/vulnerability/CVE-2021-27169 · Vendor Advisory
• https://t.me/cibsecurity/23393 · Telegram Post
• https://t.me/cvenotify/9848 · Telegram Post