Security Advisory SSA-1713

Adobe Acrobat Reader DC - XFA dashDot Use After Free Vulnerability

Reference ID: SSA-1713
Publication date: 23.02.2018
Severity: critical
Discovered by: Sebastian Apelt

Affected products/versions:
Adobe Acrobat Reader DC (<= v2018.009.20050)

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Acrobat Reader DC. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within the processing of XFA forms in PDF documents. A crafted dashDot attribute in an XFA form can cause a pointer to be reused after it has been freed. An attacker can leverage this vulnerability to execute code under the context of the current process.

References:
ZDI Advisory
CVE-2018-4888 Adobe Security Bulletin APSB18-02