Advisory Details

October 11th, 2018

Adobe Acrobat ImageConversion EMF EMR_STRETCHBLT BI_BITFIELDS Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-18-1173
ZDI-CAN-6793

CVE ID CVE-2018-15949
CVSS SCORE 3.3, (AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N)
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Acrobat Pro 2017 (classic)
VULNERABILITY DETAILS

This vulnerability allows remote attackers to disclose sensitive information 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 the parsing of EMR_STRETCHBLT 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 data structure. An attacker can leverage this in conjunction with other vulnerabilities to execute code in 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/apsb18-30.html
DISCLOSURE TIMELINE
  • 2018-07-12 - Vulnerability reported to vendor
  • 2018-10-11 - Coordinated public release of advisory
CREDIT Ron Waisberg
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