CVE Vulnerability

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.)

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

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

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

Configuration 1
Information

Published : 2021-02-10 07:15

Updated : 2021-02-12 01:03

NVD link : CVE-2021-27141

Mitre link : CVE-2021-27141

Products Affected
No products.
CWE
CWE-798