Advisory Details

July 16th, 2018

Adobe Acrobat XPS2PDF Format String Remote Code Execution Vulnerability

CVE ID	CVE-2018-5056
CVSS SCORE	7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Adobe
AFFECTED PRODUCTS	Acrobat Pro
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Acrobat. 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 XPS2PDF.api. The issue results from the lack of proper validation of a user-supplied string before using it as a format specifier. An attacker can leverage this vulnerability to execute arbitrary code under the context of the current process.
ADDITIONAL DETAILS	Adobe has issued an update to correct this vulnerability. More details can be found at: https://helpx.adobe.com/security/products/acrobat/apsb18-21.html
DISCLOSURE TIMELINE	2018-05-08 - Vulnerability reported to vendor 2018-07-16 - Coordinated public release of advisory 2018-07-16 - Advisory Updated
CREDIT	Pengsu Cheng of Trend Micro

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