VulnerabilityModified

CVE-2021-27172

A hardcoded GEPON password for root is defined inside /etc/init.d/system-config.sh.

CRITICAL 9.8EPSS 19.8%

Does this matter?

EPSS puts the probability of exploitation in the next 30 days at 19.8%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.

Description

An issue was discovered on FiberHome HG6245D devices through RP2613. A hardcoded GEPON password for root is defined inside /etc/init.d/system-config.sh.

CVSS 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 19.84% probability · 97th percentile
CISA KEV: Not listed
Weakness: CWE-798
Affected: fiberhome/hg6245d firmware
Source: cve@mitre.org

References

https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-linux-hardcoded-credentialsExploit, Third Party Advisory
https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-linux-hardcoded-credentialsExploit, Third Party Advisory

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.