PT-2021-4450 · Foxit · Foxit Pdf Reader+2

Published 2021-10-12 · Updated 2022-09-02 · CVE-2021-40326

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:C/A:N

Name of the Vulnerable Software and Affected Versions Foxit PDF Reader versions prior to 11.1 Foxit PDF Editor versions prior to 11.1 Foxit PhantomPDF versions prior to 10.1.6

Description The issue is related to the mishandling of hidden and incremental data in signed documents, which can be exploited by an attacker to write to an arbitrary file and display controlled contents during signature verification. This can allow a remote attacker to bypass existing security restrictions.

Recommendations For Foxit PDF Reader versions prior to 11.1, update to version 11.1 or later. For Foxit PDF Editor versions prior to 11.1, update to version 11.1 or later. For Foxit PhantomPDF versions prior to 10.1.6, update to version 10.1.6 or later.

Fix

Improper Verification of Cryptographic Signature

Weakness Enumeration

CWE-347

Related Identifiers

BDU:2021-05081

CVE-2021-40326

Affected Products

Foxit Pdf Editor

Foxit Pdf Reader

Foxit Phantompdf

References · 8

• https://osv.dev/vulnerability/CVE-2021-40326 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-05081 · Security Note
• https://foxit.com/support/security-bulletins.html · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-40326 · Security Note
• https://securitylab.ru/vulnerability/525483.php · Note
• https://t.me/cvenotify/35307 · Telegram Post
• https://cybersecurity-help.cz/vdb/SB2021101204 · Note
• https://t.me/cvenotify/35294 · Telegram Post