CVE-2021-27169

An issue was discovered on FiberHome AN5506-04-FA devices with firmware RP2631. There is a gepon password for the gepon account.

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#telnet-linux-hardcoded-credentials	Exploit Third Party Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:fiberhome:an5506-04-fa_firmware:rp2631:*:*:*:*:*:*:*

cpe:2.3:h:fiberhome:an5506-04-fa:-:*:*:*:*:*:*:*

History

12 Feb 2021, 01:01

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : 5.0 v3 : 9.8
CPE		cpe:2.3:o:fiberhome:an5506-04-fa_firmware:rp2631:::::::* cpe:2.3:h:fiberhome:an5506-04-fa:-:::::::*
CWE		CWE-798
References	~~(MISC) https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-linux-hardcoded-credentials -~~	(MISC) https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-linux-hardcoded-credentials - Exploit, Third Party Advisory

10 Feb 2021, 19:57

Type	Values Removed	Values Added
New CVE

Information

Published : 2021-02-10 19:15

Updated : 2023-12-10 13:41

NVD link : CVE-2021-27169

Mitre link : CVE-2021-27169

CVE.ORG link : CVE-2021-27169

JSON object : View

Products Affected

fiberhome

an5506-04-fa
an5506-04-fa_firmware

CWE

CWE-798

Use of Hard-coded Credentials

{"id": "CVE-2021-27169", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:N", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "NONE", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 9.8, "attackVector": "NETWORK", "baseSeverity": "CRITICAL", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 3.9}]}, "published": "2021-02-10T19:15:14.887", "references": [{"url": "https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#telnet-linux-hardcoded-credentials", "tags": ["Exploit", "Third Party Advisory"], "source": "cve@mitre.org"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-798"}]}], "descriptions": [{"lang": "en", "value": "An issue was discovered on FiberHome AN5506-04-FA devices with firmware RP2631. There is a gepon password for the gepon account."}, {"lang": "es", "value": "Se detect\u00f3 un problema en los dispositivos FiberHome AN5506-04-FA con firmware RP2631. Se presenta una contrase\u00f1a de gepon para la cuenta de gepon"}], "lastModified": "2021-02-12T01:01:04.410", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fiberhome:an5506-04-fa_firmware:rp2631:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7DDB3A9C-2EC4-4D80-8387-02A8B93E499E"}], "operator": "OR"}, {"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:h:fiberhome:an5506-04-fa:-:*:*:*:*:*:*:*", "vulnerable": false, "matchCriteriaId": "E8318907-7BDD-470E-899E-DC80EDDF184D"}], "operator": "OR"}], "operator": "AND"}], "sourceIdentifier": "cve@mitre.org"}