Zero-day vulnerability in Adobe Acrobat DC

Double free memory error

In March 2018 ESET detected attacks using two zero-day vulnerabilities in Microsoft win32k.sys driver (CVE-2018-8120) and and Adobe Acrobat.

Known malware:

JS/Exploit.Pdfka.QNV trojan (ESET)

Vulnerability details

Advisory: SB2018051506 - Multiple vulnerabilities in Adobe Reader and Acrobat

Vulnerable component: Adobe Acrobat DC

CVE-ID: CVE-2018-4990

CVSSv3 score: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-415 - Double Free


The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The weakness exists due to double free memory error when handling malicious input. A remote attacker can trick the victim into opening a specially crafted .pdf file and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability may result in system compromise.
Note: the vulnerability has being exploited in the wild in March 2018 along with exploit for SB2018050813.

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