Main Vulnerability Database Vulnerabilities #VU59422

Use-after-free in Adobe Reader and Adobe Acrobat - CVE-2021-44710

Published: January 11, 2022 / Updated: January 12, 2022

Vulnerability identifier: #VU59422

CSH Severity: High

CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-44710

CWE-ID: CWE-416

Exploitation vector: Remote access

Exploit availability: Public exploit is available

Vulnerability details

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing PDF files. A remote attacker can create a specially crafted PDF file, trick the victim into opening it, trigger a use-after-free error and execute arbitrary code on the system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Affected software

Adobe Reader
Adobe Acrobat

How to mitigate CVE-2021-44710

Install updates from vendor's website.

Adobe Reader - addressed in versions 17.011.30207, 20.004.30020, 21.011.20039
Adobe Acrobat - addressed in versions 17.011.30207, 20.004.30020, 21.011.20039

Links to Public Exploits and PoC-codes

Exploit #7233 - Adobe Acrobat Reader Javascript event.richValue use-after-free vulnerability (January 12, 2022)

External References

https://helpx.adobe.com/security/products/acrobat/apsb22-01.html

Related Security Bulletins

Multiple vulnerabilities in Adobe Acrobat and Reader