Advisory Details

November 14th, 2017

Adobe Acrobat Pro DC ImageConversion EMF EMR_COMMENT Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-17-908
ZDI-CAN-5219

CVE ID CVE-2017-16401
CVSS SCORE 4.3, (AV:N/AC:M/Au:N/C:P/I:N/A:N)
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Acrobat Pro DC
TIPPINGPOINT™ IPS CUSTOMER PROTECTION TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 29851. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS


This vulnerability allows remote attackers to disclose sensitive information on vulnerable installations of Adobe Acrobat Pro 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 parsing of EMR_COMMENT records in EMF files. The issue results from the lack of proper validation of user-supplied data, which can result in a read past the end of an allocated object. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of the current process.

VENDOR RESPONSE Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/acrobat/apsb17-36.html
DISCLOSURE TIMELINE
  • 2017-09-26 - Vulnerability reported to vendor
  • 2017-11-14 - Coordinated public release of advisory
CREDIT Ke Liu of Tencent's Xuanwu LAB
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