CVE-2021-23342 - Vulnerability Details - OpenCVE

This affects the package docsify before 4.12.0. It is possible to bypass the remediation done by CVE-2020-7680 and execute malicious JavaScript through the following methods 1) When parsing HTML from remote URLs, the HTML code on the main page is sanitized, but this sanitization is not taking place in the sidebar. 2) The isURL external check can be bypassed by inserting more “////” characters

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact Low

Availability Impact Low

User Interaction None

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact None

Integrity Impact Partial

Availability Impact None

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Docsifyjs	Docsify

Configuration 1 [-]

cpe:2.3:a:docsifyjs:docsify:*:*:*:*:*:*:*:*

No data.

References

Link	Providers
http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html
http://seclists.org/fulldisclosure/2021/Feb/71
https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe
https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593
https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017

History

No history.

MITRE

Status: PUBLISHED

Assigner: snyk

Published: 2021-02-19T16:35:15.574977Z

Updated: 2024-09-16T22:39:56.584Z

Reserved: 2021-01-08T00:00:00

Link: CVE-2021-23342

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-02-19T17:15:13.717

Modified: 2024-11-21T05:51:32.403

Link: CVE-2021-23342

Redhat

No data.

{"containers": {"cna": {"affected": [{"product": "docsify", "vendor": "n/a", "versions": [{"lessThan": "4.12.0", "status": "affected", "version": "unspecified", "versionType": "custom"}]}], "credits": [{"lang": "en", "value": "GiuliCler (Giulia Clerici)"}, {"lang": "en", "value": "Egidio Romano"}], "datePublic": "2021-02-19T00:00:00", "descriptions": [{"lang": "en", "value": "This affects the package docsify before 4.12.0. It is possible to bypass the remediation done by CVE-2020-7680 and execute malicious JavaScript through the following methods 1) When parsing HTML from remote URLs, the HTML code on the main page is sanitized, but this sanitization is not taking place in the sidebar. 2) The isURL external check can be bypassed by inserting more \u201c////\u201d characters"}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "exploitCodeMaturity": "PROOF_OF_CONCEPT", "integrityImpact": "LOW", "privilegesRequired": "NONE", "remediationLevel": "UNAVAILABLE", "reportConfidence": "CONFIRMED", "scope": "UNCHANGED", "temporalScore": 8.1, "temporalSeverity": "HIGH", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:P/RL:U/RC:C", "version": "3.1"}}], "problemTypes": [{"descriptions": [{"description": "Cross-site Scripting (XSS)", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2021-02-22T17:06:13", "orgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730", "shortName": "snyk"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017"}, {"tags": ["x_refsource_MISC"], "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593"}, {"tags": ["x_refsource_MISC"], "url": "https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe"}, {"name": "20210219 [KIS-2021-02] docsify <= 4.11.6 DOM-based Cross-Site Scripting Vulnerability", "tags": ["mailing-list", "x_refsource_FULLDISC"], "url": "http://seclists.org/fulldisclosure/2021/Feb/71"}, {"tags": ["x_refsource_MISC"], "url": "http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html"}], "title": "Cross-site Scripting (XSS)", "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "report@snyk.io", "DATE_PUBLIC": "2021-02-19T16:30:17.736948Z", "ID": "CVE-2021-23342", "STATE": "PUBLIC", "TITLE": "Cross-site Scripting (XSS)"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "docsify", "version": {"version_data": [{"version_affected": "<", "version_value": "4.12.0"}]}}]}, "vendor_name": "n/a"}]}}, "credit": [{"lang": "eng", "value": "GiuliCler (Giulia Clerici)"}, {"lang": "eng", "value": "Egidio Romano"}], "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "This affects the package docsify before 4.12.0. It is possible to bypass the remediation done by CVE-2020-7680 and execute malicious JavaScript through the following methods 1) When parsing HTML from remote URLs, the HTML code on the main page is sanitized, but this sanitization is not taking place in the sidebar. 2) The isURL external check can be bypassed by inserting more \u201c////\u201d characters"}]}, "impact": {"cvss": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L/E:P/RL:U/RC:C", "version": "3.1"}}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "Cross-site Scripting (XSS)"}]}]}, "references": {"reference_data": [{"name": "https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017", "refsource": "MISC", "url": "https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017"}, {"name": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593", "refsource": "MISC", "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593"}, {"name": "https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe", "refsource": "MISC", "url": "https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe"}, {"name": "20210219 [KIS-2021-02] docsify <= 4.11.6 DOM-based Cross-Site Scripting Vulnerability", "refsource": "FULLDISC", "url": "http://seclists.org/fulldisclosure/2021/Feb/71"}, {"name": "http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html", "refsource": "MISC", "url": "http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T19:05:55.707Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe"}, {"name": "20210219 [KIS-2021-02] docsify <= 4.11.6 DOM-based Cross-Site Scripting Vulnerability", "tags": ["mailing-list", "x_refsource_FULLDISC", "x_transferred"], "url": "http://seclists.org/fulldisclosure/2021/Feb/71"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html"}]}]}, "cveMetadata": {"assignerOrgId": "bae035ff-b466-4ff4-94d0-fc9efd9e1730", "assignerShortName": "snyk", "cveId": "CVE-2021-23342", "datePublished": "2021-02-19T16:35:15.574977Z", "dateReserved": "2021-01-08T00:00:00", "dateUpdated": "2024-09-16T22:39:56.584Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:docsifyjs:docsify:*:*:*:*:*:*:*:*", "matchCriteriaId": "E69E149B-25FD-4819-B489-EC99DA188A8E", "versionEndExcluding": "4.12.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "This affects the package docsify before 4.12.0. It is possible to bypass the remediation done by CVE-2020-7680 and execute malicious JavaScript through the following methods 1) When parsing HTML from remote URLs, the HTML code on the main page is sanitized, but this sanitization is not taking place in the sidebar. 2) The isURL external check can be bypassed by inserting more \u201c////\u201d characters"}, {"lang": "es", "value": "Esto afecta al paquete docsify versiones anteriores a 4.12.0. Es posible omitir la correcci\u00f3n realizada por CVE-2020-7680 y ejecutar JavaScript malicioso por medio de los siguientes m\u00e9todos 1) Al analizar HTML desde URL remotas, el c\u00f3digo HTML en la p\u00e1gina principal es saneado, pero este saneamiento no se lleva a cabo en el barra lateral. 2) La comprobaci\u00f3n externa de isURL se puede omitir insertando m\u00e1s caracteres \"////\""}], "id": "CVE-2021-23342", "lastModified": "2024-11-21T05:51:32.403", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 4.3, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:N/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "LOW", "baseScore": 8.6, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 4.7, "source": "report@snyk.io", "type": "Secondary"}, {"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 6.1, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.7, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-19T17:15:13.717", "references": [{"source": "report@snyk.io", "tags": ["Exploit", "Third Party Advisory"], "url": "http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html"}, {"source": "report@snyk.io", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2021/Feb/71"}, {"source": "report@snyk.io", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe"}, {"source": "report@snyk.io", "tags": ["Exploit", "Third Party Advisory"], "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593"}, {"source": "report@snyk.io", "tags": ["Exploit", "Third Party Advisory"], "url": "https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "http://seclists.org/fulldisclosure/2021/Feb/71"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Third Party Advisory"], "url": "https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory"], "url": "https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017"}], "sourceIdentifier": "report@snyk.io", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-79"}], "source": "nvd@nist.gov", "type": "Primary"}]}