PT-2021-22515 · Pdftron · Webviewer Ui

Published 2021-09-15 · Updated 2021-09-30 · CVE-2021-39307

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: PDFTron's WebViewer UI versions 8.0 and below

Description: The issue allows the execution of arbitrary JavaScript code due to the rendering of dangerous URLs, including JavaScript URLs, as hyperlinks in supported documents.

Recommendations: For versions 8.0 and below, consider disabling the rendering of hyperlinks for JavaScript URLs as a temporary workaround until a patch is available. Restrict access to documents that may contain malicious URLs to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2021-39307

Affected Products

Webviewer Ui

References · 5

• 🔥 https://research.nccgroup.com/2021/09/14/technical-advisory-pdftron-javascript-urls-allowed-in-webviewer-ui-cve-2021-39307 · Exploit
• https://osv.dev/vulnerability/CVE-2021-39307 · Vendor Advisory
• https://pdftron.com/webviewer · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-39307 · Security Note
• https://t.me/cvenotify/20892 · Telegram Post