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ID

VAR-202205-0281


CVE

CVE-2021-43206


TITLE

Fortinet FortiOS  Vulnerability regarding information leakage due to error messages in

Trust: 0.8

sources: JVNDB: JVNDB-2022-010449

DESCRIPTION

A server-generated error message containing sensitive information in Fortinet FortiOS 7.0.0 through 7.0.3, 6.4.0 through 6.4.8, 6.2.x, 6.0.x and FortiProxy 7.0.0 through 7.0.1, 2.0.x allows malicious webservers to retrieve a web proxy's client username and IP via same origin HTTP requests triggering proxy-generated HTTP status codes pages. Fortinet FortiOS Contains a vulnerability related to information leakage due to error messages.Information may be obtained. Fortinet FortiOS is a set of security operating system dedicated to the FortiGate network security platform developed by Fortinet. The system provides users with various security functions such as firewall, anti-virus, IPSec/SSLVPN, Web content filtering and anti-spam. The vulnerability stems from the excessive data output in the error message generated by the server. A remote attacker can use this vulnerability to lure the victim to connect to a malicious web server and retrieve the client of the web proxy through a same-origin HTTP request. End user name and IP

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sources: NVD: CVE-2021-43206 // JVNDB: JVNDB-2022-010449 // VULHUB: VHN-404253 // VULMON: CVE-2021-43206

AFFECTED PRODUCTS

vendor:fortinetmodel:fortiosscope:gteversion:6.2.0

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vendor:fortinetmodel:fortiosscope:gteversion:7.0.0

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vendor:fortinetmodel:fortiproxyscope:gteversion:2.0.0

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vendor:fortinetmodel:fortiosscope:gteversion:5.6.0

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vendor:fortinetmodel:fortiosscope:ltversion:6.2.10

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vendor:fortinetmodel:fortiproxyscope:gteversion:7.0.0

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vendor:fortinetmodel:fortiosscope:gteversion:6.4.0

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vendor:fortinetmodel:fortiproxyscope:ltversion:7.0.2

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vendor:fortinetmodel:fortiproxyscope:ltversion:2.0.9

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vendor:fortinetmodel:fortiosscope:ltversion:7.0.4

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vendor:fortinetmodel:fortiosscope:ltversion:6.4.8

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vendor:fortinetmodel:fortiosscope:ltversion:6.0.14

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vendor:フォーティネットmodel:fortiproxyscope: - version: -

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vendor:フォーティネットmodel:fortiosscope: - version: -

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sources: JVNDB: JVNDB-2022-010449 // NVD: CVE-2021-43206

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-43206
value: MEDIUM

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psirt@fortinet.com: CVE-2021-43206
value: MEDIUM

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NVD: CVE-2021-43206
value: MEDIUM

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CNNVD: CNNVD-202205-1941
value: MEDIUM

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VULHUB: VHN-404253
value: MEDIUM

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VULMON: CVE-2021-43206
value: MEDIUM

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nvd@nist.gov: CVE-2021-43206
severity: MEDIUM
baseScore: 4.3
vectorString: AV:N/AC:M/AU:N/C:P/I:N/A:N
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: NONE
availabilityImpact: NONE
exploitabilityScore: 8.6
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

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VULHUB: VHN-404253
severity: MEDIUM
baseScore: 4.3
vectorString: AV:N/AC:M/AU:N/C:P/I:N/A:N
accessVector: NETWORK
accessComplexity: MEDIUM
authentication: NONE
confidentialityImpact: PARTIAL
integrityImpact: NONE
availabilityImpact: NONE
exploitabilityScore: 8.6
impactScore: 2.9
acInsufInfo: NONE
obtainAllPrivilege: NONE
obtainUserPrivilege: NONE
obtainOtherPrivilege: NONE
userInteractionRequired: NONE
version: 2.0

Trust: 0.1

nvd@nist.gov: CVE-2021-43206
baseSeverity: MEDIUM
baseScore: 4.3
vectorString: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: LOW
integrityImpact: NONE
availabilityImpact: NONE
exploitabilityScore: 2.8
impactScore: 1.4
version: 3.1

Trust: 2.0

OTHER: JVNDB-2022-010449
baseSeverity: MEDIUM
baseScore: 4.3
vectorString: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
attackVector: NETWORK
attackComplexity: LOW
privilegesRequired: NONE
userInteraction: REQUIRED
scope: UNCHANGED
confidentialityImpact: LOW
integrityImpact: NONE
availabilityImpact: NONE
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: VULHUB: VHN-404253 // VULMON: CVE-2021-43206 // JVNDB: JVNDB-2022-010449 // CNNVD: CNNVD-202205-1941 // NVD: CVE-2021-43206 // NVD: CVE-2021-43206

PROBLEMTYPE DATA

problemtype:CWE-209

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problemtype:Information leakage due to error message (CWE-209) [NVD evaluation ]

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sources: VULHUB: VHN-404253 // JVNDB: JVNDB-2022-010449 // NVD: CVE-2021-43206

THREAT TYPE

remote

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sources: CNNVD: CNNVD-202205-1941

TYPE

information disclosure

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sources: CNNVD: CNNVD-202205-1941

PATCH

title:FG-IR-21-2316url:https://www.fortiguard.com/psirt/FG-IR-21-231

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title:Fortinet FortiOS Repair measures for information disclosure vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=191271

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sources: JVNDB: JVNDB-2022-010449 // CNNVD: CNNVD-202205-1941

EXTERNAL IDS

db:NVDid:CVE-2021-43206

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db:JVNDBid:JVNDB-2022-010449

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db:CS-HELPid:SB2022050318

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db:CNNVDid:CNNVD-202205-1941

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db:CNVDid:CNVD-2022-50947

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db:VULHUBid:VHN-404253

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db:VULMONid:CVE-2021-43206

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sources: VULHUB: VHN-404253 // VULMON: CVE-2021-43206 // JVNDB: JVNDB-2022-010449 // CNNVD: CNNVD-202205-1941 // NVD: CVE-2021-43206

REFERENCES

url:https://fortiguard.com/psirt/fg-ir-21-231

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url:https://nvd.nist.gov/vuln/detail/cve-2021-43206

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url:https://vigilance.fr/vulnerability/fortios-information-disclosure-via-web-proxy-error-pages-38209

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url:https://www.cybersecurity-help.cz/vdb/sb2022050318

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url:https://cxsecurity.com/cveshow/cve-2021-43206/

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url:https://cwe.mitre.org/data/definitions/209.html

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url:https://nvd.nist.gov

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sources: VULHUB: VHN-404253 // VULMON: CVE-2021-43206 // JVNDB: JVNDB-2022-010449 // CNNVD: CNNVD-202205-1941 // NVD: CVE-2021-43206

SOURCES

db:VULHUBid:VHN-404253
db:VULMONid:CVE-2021-43206
db:JVNDBid:JVNDB-2022-010449
db:CNNVDid:CNNVD-202205-1941
db:NVDid:CVE-2021-43206

LAST UPDATE DATE

2024-08-14T15:01:03.262000+00:00


SOURCES UPDATE DATE

db:VULHUBid:VHN-404253date:2022-05-13T00:00:00
db:VULMONid:CVE-2021-43206date:2022-05-13T00:00:00
db:JVNDBid:JVNDB-2022-010449date:2023-08-15T06:55:00
db:CNNVDid:CNNVD-202205-1941date:2022-05-16T00:00:00
db:NVDid:CVE-2021-43206date:2022-05-13T02:49:11.607

SOURCES RELEASE DATE

db:VULHUBid:VHN-404253date:2022-05-04T00:00:00
db:VULMONid:CVE-2021-43206date:2022-05-04T00:00:00
db:JVNDBid:JVNDB-2022-010449date:2023-08-15T00:00:00
db:CNNVDid:CNNVD-202205-1941date:2022-05-03T00:00:00
db:NVDid:CVE-2021-43206date:2022-05-04T16:15:08.227