PT-2021-14805 · Foxit · Foxit Pdf Reader

Aleksandar Nikolic · Published 2021-07-28 · Updated 2022-09-03 · CVE-2021-21870

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Foxit Software’s PDF Reader version 10.1.4.37651

Description A use-after-free issue exists in the JavaScript engine of Foxit Software’s PDF Reader. This can be triggered by a specially crafted PDF document, leading to the reuse of previously free memory, which can result in arbitrary code execution. An attacker needs to trick the user into opening a malicious file or site to trigger this issue if the browser plugin extension is enabled.

Recommendations For version 10.1.4.37651, consider disabling the browser plugin extension as a temporary workaround until a patch is available. Restrict access to potentially malicious PDF documents to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this issue.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

CVE-2021-21870

Affected Products

Foxit Pdf Reader

References · 5

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1307 · Exploit
• https://osv.dev/vulnerability/CVE-2021-21870 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-21870 · Security Note
• https://t.me/cvenotify/19284 · Telegram Post
• https://t.me/cybersecuritytechnologies/3935 · Telegram Post