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ID

VAR-202010-0960


CVE

CVE-2020-27649


TITLE

Synology Router Manager trust management issue vulnerability

Trust: 1.2

sources: CNVD: CNVD-2020-60451 // CNNVD: CNNVD-202010-1642

DESCRIPTION

Improper certificate validation vulnerability in OpenVPN client in Synology Router Manager (SRM) before 1.2.4-8081 allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate. Synology Router Manager (SRM) is a software used to configure and manage Synology routers from Synology, Taiwan. Synology Router Manager (SRM) versions prior to 1.2.4-8081 have a security vulnerability. The vulnerability stems from an inappropriate certificate verification vulnerability in the OpenVPN client

Trust: 2.34

sources: NVD: CVE-2020-27649 // JVNDB: JVNDB-2020-012924 // CNVD: CNVD-2020-60451 // VULHUB: VHN-371558 // VULMON: CVE-2020-27649

IOT TAXONOMY

category:['Network device']sub_category: -

Trust: 0.6

sources: CNVD: CNVD-2020-60451

AFFECTED PRODUCTS

vendor:synologymodel:router managerscope:ltversion:1.2.4-8081

Trust: 1.6

vendor:synologymodel:router managerscope:gteversion:1.2

Trust: 1.0

vendor:synologymodel:router managerscope:eqversion:1.2.4-8081

Trust: 0.8

vendor:synologymodel:router managerscope:eqversion: -

Trust: 0.8

sources: CNVD: CNVD-2020-60451 // JVNDB: JVNDB-2020-012924 // NVD: CVE-2020-27649

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2020-27649
value: CRITICAL

Trust: 1.0

security@synology.com: CVE-2020-27649
value: HIGH

Trust: 1.0

NVD: CVE-2020-27649
value: CRITICAL

Trust: 0.8

CNVD: CNVD-2020-60451
value: HIGH

Trust: 0.6

CNNVD: CNNVD-202010-1642
value: HIGH

Trust: 0.6

VULHUB: VHN-371558
value: MEDIUM

Trust: 0.1

nvd@nist.gov: CVE-2020-27649
severity: MEDIUM
baseScore: 6.8
vectorString: AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 8.6
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 1.8

CNVD: CNVD-2020-60451
severity: HIGH
baseScore: 10.0
vectorString: AV:N/AC:L/AU:N/C:C/I:C/A:C
accessVector: NETWORK
accessComplexity: LOW
authentication: NONE
confidentialityImpact: COMPLETE
integrityImpact: COMPLETE
availabilityImpact: COMPLETE
exploitabilityScore: 10.0
impactScore: 10.0
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.6

VULHUB: VHN-371558
severity: MEDIUM
baseScore: 6.8
vectorString: AV:N/AC:M/AU:N/C:P/I:P/A:P
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: PARTIAL
availabilityImpact: PARTIAL
exploitabilityScore: 8.6
impactScore: 6.4
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

nvd@nist.gov: CVE-2020-27649
baseSeverity: CRITICAL
baseScore: 9.0
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.2
impactScore: 6.0
version: 3.1

Trust: 1.0

security@synology.com: CVE-2020-27649
baseSeverity: HIGH
baseScore: 8.3
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: REQUIRED
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 1.6
impactScore: 6.0
version: 3.1

Trust: 1.0

NVD: CVE-2020-27649
baseSeverity: CRITICAL
baseScore: 9.0
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: CHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: CNVD: CNVD-2020-60451 // VULHUB: VHN-371558 // JVNDB: JVNDB-2020-012924 // CNNVD: CNNVD-202010-1642 // NVD: CVE-2020-27649 // NVD: CVE-2020-27649

PROBLEMTYPE DATA

problemtype:CWE-295

Trust: 1.1

problemtype:Bad certificate verification (CWE-295) [NVD Evaluation ]

Trust: 0.8

sources: VULHUB: VHN-371558 // JVNDB: JVNDB-2020-012924 // NVD: CVE-2020-27649

TYPE

trust management problem

Trust: 0.6

sources: CNNVD: CNNVD-202010-1642

PATCH

title:Synology-SA-20url:https://www.synology.com/security/advisory/Synology_SA_20_14

Trust: 0.8

title:Patch for Synology Router Manager trust management issue vulnerabilityurl:https://www.cnvd.org.cn/patchInfo/show/238570

Trust: 0.6

title:Synology Router Manager Repair measures for trust management problem vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=131799

Trust: 0.6

sources: CNVD: CNVD-2020-60451 // JVNDB: JVNDB-2020-012924 // CNNVD: CNNVD-202010-1642

EXTERNAL IDS

db:NVDid:CVE-2020-27649

Trust: 3.2

db:TALOSid:TALOS-2020-1058

Trust: 1.8

db:JVNDBid:JVNDB-2020-012924

Trust: 0.8

db:CNVDid:CNVD-2020-60451

Trust: 0.7

db:CNNVDid:CNNVD-202010-1642

Trust: 0.7

db:VULHUBid:VHN-371558

Trust: 0.1

db:VULMONid:CVE-2020-27649

Trust: 0.1

sources: CNVD: CNVD-2020-60451 // VULHUB: VHN-371558 // VULMON: CVE-2020-27649 // JVNDB: JVNDB-2020-012924 // CNNVD: CNNVD-202010-1642 // NVD: CVE-2020-27649

REFERENCES

url:https://nvd.nist.gov/vuln/detail/cve-2020-27649

Trust: 2.0

url:https://www.synology.com/security/advisory/synology_sa_20_14

Trust: 1.8

url:https://www.talosintelligence.com/vulnerability_reports/talos-2020-1058

Trust: 1.2

url:https://talosintelligence.com/vulnerability_reports/talos-2020-1058

Trust: 1.2

url:https://nvd.nist.gov

Trust: 0.1

sources: CNVD: CNVD-2020-60451 // VULHUB: VHN-371558 // VULMON: CVE-2020-27649 // JVNDB: JVNDB-2020-012924 // CNNVD: CNNVD-202010-1642 // NVD: CVE-2020-27649

CREDITS

Discovered by Claudio Bozzato of Cisco Talos.

Trust: 0.6

sources: CNNVD: CNNVD-202010-1642

SOURCES

db:CNVDid:CNVD-2020-60451
db:VULHUBid:VHN-371558
db:VULMONid:CVE-2020-27649
db:JVNDBid:JVNDB-2020-012924
db:CNNVDid:CNNVD-202010-1642
db:NVDid:CVE-2020-27649

LAST UPDATE DATE

2024-11-23T22:11:17.477000+00:00


SOURCES UPDATE DATE

db:CNVDid:CNVD-2020-60451date:2020-11-04T00:00:00
db:VULHUBid:VHN-371558date:2020-11-09T00:00:00
db:VULMONid:CVE-2020-27649date:2020-11-09T00:00:00
db:JVNDBid:JVNDB-2020-012924date:2021-06-15T06:01:00
db:CNNVDid:CNNVD-202010-1642date:2020-10-30T00:00:00
db:NVDid:CVE-2020-27649date:2024-11-21T05:21:35.417

SOURCES RELEASE DATE

db:CNVDid:CNVD-2020-60451date:2020-11-04T00:00:00
db:VULHUBid:VHN-371558date:2020-10-29T00:00:00
db:VULMONid:CVE-2020-27649date:2020-10-29T00:00:00
db:JVNDBid:JVNDB-2020-012924date:2021-06-15T00:00:00
db:CNNVDid:CNNVD-202010-1642date:2020-10-29T00:00:00
db:NVDid:CVE-2020-27649date:2020-10-29T09:15:12.717