Advisory Details

September 27th, 2018

Adobe Acrobat Pro DC ImageConversion JPEG2000 Parsing Out-Of-Bounds Read Information Disclosure Vulnerability

ZDI-18-1092
ZDI-CAN-5986

CVE ID CVE-2018-4990
CVSS SCORE 4.3, (AV:N/AC:M/Au:N/C:P/I:N/A:N)
AFFECTED VENDORS Adobe
AFFECTED PRODUCTS Acrobat Pro DC
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 JPEG2000 images embedded in PDF documents. 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.

ADDITIONAL DETAILS Adobe has issued an update to correct this vulnerability. More details can be found at:
https://helpx.adobe.com/security/products/acrobat/apsb18-09.html
DISCLOSURE TIMELINE
  • 2018-04-25 - Vulnerability reported to vendor
  • 2018-09-27 - Coordinated public release of advisory
  • 2018-09-27 - Advisory Updated
CREDIT Ke Liu of Tencent's Xuanwu LAB
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