CVE-2021-43116 - Vulnerability Details - OpenCVE

An Access Control vulnerability exists in Nacos 2.0.3 in the access prompt page; enter username and password, click on login to capture packets and then change the returned package, which lets a malicious user login.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Alibaba	Nacos

Configuration 1 [-]

cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
http://packetstormsecurity.com/files/171638/Nacos-2.0.3-Access-Control.html
https://github.com/alibaba/nacos/issues/7127
https://github.com/alibaba/nacos/issues/7182

History

Mon, 14 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.06342}`	epss `{'score': 0.06528}`

Sat, 12 Jul 2025 13:45:00 +0000

Type	Values Removed	Values Added
Metrics	epss `{'score': 0.0606}`	epss `{'score': 0.06342}`

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-07-05T00:00:00

Updated: 2024-08-04T03:47:13.593Z

Reserved: 2021-11-01T00:00:00

Link: CVE-2021-43116

Vulnrichment

No data.

NVD

Status : Modified

Published: 2022-07-05T14:15:08.767

Modified: 2024-11-21T06:28:42.333

Link: CVE-2021-43116

Redhat

No data.

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:alibaba:nacos:*:*:*:*:*:*:*:*", "matchCriteriaId": "92C071B9-CC45-4164-986C-9DDE011EAB15", "versionEndIncluding": "2.0.3", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "An Access Control vulnerability exists in Nacos 2.0.3 in the access prompt page; enter username and password, click on login to capture packets and then change the returned package, which lets a malicious user login."}, {"lang": "es", "value": "Se presenta una vulnerabilidad de control de acceso en Nacos versiones 2.0.3, en la p\u00e1gina access prompt; ingrese el nombre de usuario y la contrase\u00f1a, haga clic en iniciar sesi\u00f3n para capturar paquetes y luego cambie el paquete devuelto, lo que permite a un usuario malicioso iniciar sesi\u00f3n"}], "id": "CVE-2021-43116", "lastModified": "2024-11-21T06:28:42.333", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "PARTIAL", "baseScore": 6.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-07-05T14:15:08.767", "references": [{"source": "cve@mitre.org", "url": "http://packetstormsecurity.com/files/171638/Nacos-2.0.3-Access-Control.html"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/alibaba/nacos/issues/7127"}, {"source": "cve@mitre.org", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/alibaba/nacos/issues/7182"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "http://packetstormsecurity.com/files/171638/Nacos-2.0.3-Access-Control.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/alibaba/nacos/issues/7127"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Issue Tracking", "Third Party Advisory"], "url": "https://github.com/alibaba/nacos/issues/7182"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-287"}], "source": "nvd@nist.gov", "type": "Primary"}]}