CVE-2021-23342
AzureDocs Bypass JavaScript Execution
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
INFO
Published Date :
Feb. 19, 2021, 5:15 p.m.
Last Modified :
Nov. 21, 2024, 5:51 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-23342.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html | Exploit Third Party Advisory |
| http://seclists.org/fulldisclosure/2021/Feb/71 | Mailing List Third Party Advisory |
| https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe | Patch Third Party Advisory |
| https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593 | Exploit Third Party Advisory |
| https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017 | Exploit Third Party Advisory |
| http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html | Exploit Third Party Advisory |
| http://seclists.org/fulldisclosure/2021/Feb/71 | Mailing List Third Party Advisory |
| https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe | Patch Third Party Advisory |
| https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593 | Exploit Third Party Advisory |
| https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017 | Exploit Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-23342 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-23342
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-23342 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-23342 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html Added Reference http://seclists.org/fulldisclosure/2021/Feb/71 Added Reference https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe Added Reference https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593 Added Reference https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Feb. 25, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N Changed Reference Type http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html No Types Assigned http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html Exploit, Third Party Advisory Changed Reference Type http://seclists.org/fulldisclosure/2021/Feb/71 No Types Assigned http://seclists.org/fulldisclosure/2021/Feb/71 Mailing List, Third Party Advisory Changed Reference Type https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe No Types Assigned https://github.com/docsifyjs/docsify/commit/ff2a66f12752471277fe81a64ad6c4b2c08111fe Patch, Third Party Advisory Changed Reference Type https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593 No Types Assigned https://snyk.io/vuln/SNYK-JAVA-ORGWEBJARSNPM-1076593 Exploit, Third Party Advisory Changed Reference Type https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017 No Types Assigned https://snyk.io/vuln/SNYK-JS-DOCSIFY-1066017 Exploit, Third Party Advisory Added CWE NIST CWE-79 Added CPE Configuration OR *cpe:2.3:a:docsifyjs:docsify:*:*:*:*:*:*:*:* versions up to (excluding) 4.12.0 -
CVE Modified by [email protected]
Feb. 22, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html [No Types Assigned] -
CVE Modified by [email protected]
Feb. 20, 2021
Action Type Old Value New Value Added Reference http://seclists.org/fulldisclosure/2021/Feb/71 [No Types Assigned]
Vulnerability Scoring Details
Base CVSS Score: 8.6
Base CVSS Score: 4.3
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.46 }} -0.07%
score
0.61397
percentile