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[email protected]CVE-2021-27177

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

CVE-2021-27177

2021-02-1019:15:15

CWE-863

[email protected]

web.nvd.nist.gov

fiberhome hg6245d

rp2613

authentication bypass

cve-2021-27177

nvd

7.5 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

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

9.6 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 bypass authentication by sending the decoded value of the GgpoZWxwCmxpc3QKd2hvCg== string to the telnet server.

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-auth-bypass

7.5 High

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

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

9.6 High

AI Score

Confidence

High

0.009 Low

EPSS

Percentile

82.8%

JSON

Related for CVE-2021-27177

nvd1 prion1 cvelist1