Improper Verification of Cryptographic Signature in Adobe Reader and Adobe Acrobat - CVE-2020-24439

Vulnerability identifier: #VU48128

CSH Severity: Medium

CVSS v4: 4.6 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2020-24439

CWE-ID: CWE-347

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to incorrect digital signature verification. A remote attacker can create a specially crafted PDF file, trick the victim into opening it and bypass implemented security restrictions.

Adobe Reader
Adobe Acrobat

Install updates from vendor's website.

Adobe Reader - addressed in versions 17.011.30180, 20.001.30010, 20.013.20064
Adobe Acrobat - addressed in versions 17.011.30180, 20.001.30010, 20.013.20064

• https://helpx.adobe.com/security/products/acrobat/apsb20-67.html

• Multiple vulnerabilities in Adobe Reader and Acrobat