CVE-2021-23342
CVSS V2 Medium 4.3
CVSS V3 Medium 6.1
Description
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
Overview
- CVE ID
- CVE-2021-23342
- Assigner
- report@snyk.io
- Vulnerability Status
- Analyzed
- Published Version
- 2021-02-19T17:15:13
- Last Modified Date
- 2021-02-25T22:22:18
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:docsifyjs:docsify:*:*:*:*:*:*:*:* | 1 | OR | 4.12.0 |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:N/I:P/A:N
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- NONE
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 2.9
CVSS Version 3
- Version
- 3.1
- Vector String
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
- Attack Vector
- NETWORK
- Attack Compatibility
- LOW
- Privileges Required
- NONE
- User Interaction
- REQUIRED
- Scope
- CHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- NONE
- Base Score
- 6.1
- Base Severity
- MEDIUM
- Exploitability Score
- 2.8
- Impact Score
- 2.7
References
| Reference URL | Reference Tags |
|---|---|
| https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017 | Exploit Third Party Advisory |
| https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593 | Exploit Third Party Advisory |
| https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe | Patch Third Party Advisory |
| http://seclists.org/fulldisclosure/2021/Feb/71 | Mailing List Third Party Advisory |
| http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html | Exploit Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2021-23342 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-23342 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:21:37 | Added to TrackCVE | |||
| 2022-12-05 22:25:22 | 2021-02-19T17:15Z | 2021-02-19T17:15:13 | CVE Published Date | updated |
| 2022-12-05 22:25:22 | 2021-02-25T22:22:18 | CVE Modified Date | updated | |
| 2022-12-05 22:25:22 | Analyzed | Vulnerability Status | updated |