7.5
CWE
20
Advisory Published
Updated

CVE-2021-27179: Input Validation

First published: Wed Feb 10 2021(Updated: )

An issue was discovered on FiberHome HG6245D devices through RP2613. It is possible to crash the telnet daemon by sending a certain 0a 65 6e 61 62 6c 65 0a 02 0a 1a 0a string.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Fiberhome Hg6245d Firmware<=rp2613
FiberHome HG6245D

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Frequently Asked Questions

  • What is the vulnerability severity of CVE-2021-27179?

    The vulnerability severity of CVE-2021-27179 is high with a severity value of 7.5.

  • How can an attacker exploit CVE-2021-27179?

    An attacker can exploit CVE-2021-27179 by sending a certain string to crash the telnet daemon on FiberHome HG6245D devices through RP2613.

  • Is Fiberhome Hg6245d Firmware affected by CVE-2021-27179?

    Yes, Fiberhome Hg6245d Firmware is affected by CVE-2021-27179.

  • How can I fix the vulnerability in Fiberhome Hg6245d Firmware?

    To fix the vulnerability in Fiberhome Hg6245d Firmware, it is recommended to apply the latest firmware update provided by the vendor.

  • Where can I find more information about CVE-2021-27179?

    More information about CVE-2021-27179 can be found at https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-cli-dos.

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