PT-2020-19703 · Docsify · Docsify

Published 2020-07-20 · Updated 2021-05-18 · CVE-2020-7680

Positive Technologies (AI Summary)

CVSS v3.1

6.1

Medium

Base vector

AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions docsify versions prior to 4.11.4

Description The issue is related to Cross-site Scripting (XSS) and occurs due to the lack of validation in fragment identifiers used by docsify.js to load resources from server-side .md files. This allows an attacker to provide external URLs after the /#/ and render arbitrary JavaScript/HTML inside a docsify page. For example, an attacker could use a URL like 'domain.com/#//attacker.com' to exploit this issue.

Recommendations For versions prior to 4.11.4, update to version 4.11.4 or later to resolve the issue. As a temporary workaround, consider restricting access to the /#/ endpoint to minimize the risk of exploitation. Avoid using external URLs after the /#/ in docsify pages until the issue is resolved.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2020-7680

GHSA-QPQH-46QJ-VWCW

SNYK-JS-DOCSIFY-567099

Affected Products

Docsify

References · 12

• 🔥 http://packetstormsecurity.com/files/161495/docsify-4.11.6-Cross-Site-Scripting.html · Exploit
• 🔥 http://packetstormsecurity.com/files/158515/Docsify.js-4.11.4-Cross-Site-Scripting.html · Exploit
• 🔥 https://exploit-db.com/exploits/48681 · Exploit
• https://github.com/docsifyjs/docsify/pull/1128 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-7680 · Security Note
• https://osv.dev/vulnerability/CVE-2020-7680 · Vendor Advisory
• https://osv.dev/vulnerability/GHSA-qpqh-46qj-vwcw · Vendor Advisory
• https://github.com/docsifyjs/docsify/issues/1126 · Note
• https://t.me/cibsecurity/23878 · Telegram Post
• https://t.me/cvenotify/10198 · Telegram Post
• https://snyk.io/vuln/SNYK-JS-DOCSIFY-567099 · Note
• http://seclists.org/fulldisclosure/2021/Feb/71 · Note