CVE-2021-27141

An issue was discovered on FiberHome HG6245D devices through RP2613. Credentials in /fhconf/umconfig.txt are obfuscated via XOR with the hardcoded *j7a(L#yZ98sSd5HfSgGjMj8;Ss;d)(*&^#@$a2s0i3g key. (The webs binary has details on how XOR is used.)

CVSS v3 9.8 CRITICAL
CVSS v2.0 5.0 MEDIUM

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#httpd-decryption-algorithm	Exploit Third Party Advisory
https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#httpd-decryption-algorithm	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:fiberhome:hg6245d_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:fiberhome:hg6245d:-:*:*:*:*:*:*:*

History

21 Nov 2024, 05:57

Type	Values Removed	Values Added
References	~~() https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#httpd-decryption-algorithm - Exploit, Third Party Advisory~~	() https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#httpd-decryption-algorithm - Exploit, Third Party Advisory

Information

Published : 2021-02-10 19:15

Updated : 2024-11-21 05:57

NVD link : CVE-2021-27141

Mitre link : CVE-2021-27141

CVE.ORG link : CVE-2021-27141

JSON object : View

Products Affected

fiberhome

hg6245d_firmware
hg6245d

CWE

CWE-798

Use of Hard-coded Credentials

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