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[email protected]CVE-2021-27171

HistoryFeb 10, 2021 - 7:15 p.m.

CVE-2021-27171

2021-02-1019:15:15

CWE-787

[email protected]

web.nvd.nist.gov

cve

2021

27171

fiberhome

hg6245d

rp2613

linux

telnetd

root access

cli

nvd

10 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.4 High

AI Score

Confidence

High

0.009 Low

EPSS

Percentile

82.8%

JSON

An issue was discovered on FiberHome HG6245D devices through RP2613. It is possible to start a Linux telnetd as root on port 26/tcp by using the CLI interface commands of ddd and shell (or tshell).

Affected configurations

NVD

Node

fiberhomehg6245d_firmwareRange≤rp2613

AND

fiberhomehg6245dMatch-

CPENameOperatorVersion
fiberhome:hg6245d_firmwarefiberhome hg6245d firmwarelerp2613

CPE	Name	Operator	Version
fiberhome:hg6245d_firmware	fiberhome hg6245d firmware	le	rp2613

References

pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-cli-privilege-escalation

10 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:C/I:C/A:C

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.4 High

AI Score

Confidence

High

0.009 Low

EPSS

Percentile

82.8%

JSON

Related for CVE-2021-27171

cvelist1 prion1 nvd1