SRC-2018-0023 : Adobe Acrobat Pro DC XPS OpenType Font Parsing idDelta Heap Buffer Overflow Remote Code Execution Vulnerability

CVE ID:

CVE-2018-5015

CVSS Score:

6.8, (AV:N/AC:M/Au:N/C:P/I:P/A:P)

Affected Vendors:

Adobe

Affected Products:

Adobe Acrobat Pro

Vulnerability Details:

This vulnerability allows remote attackers to execute arbitrary code 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 embedded font files inside of XPS files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length, heap-based buffer. An attacker can leverage this vulnerability to execute code under the context of the current process.

Vendor Response:

Adobe has issued an update to correct these vulnerabilities. More details can be found at:
https://helpx.adobe.com/security/products/acrobat/apsb18-21.html

Disclosure Timeline:

  • 2018-04-03 – Verified and acquired by iDefense
  • 2018-07-13 – Coordinated public release of advisory

Credit:

This vulnerability was discovered by Steven Seeley (mr_me) of Source Incite

Acknowledgments:

Source Incite would like to acknowledge iDefense's Vulnerability Contributor Program for the help with co-ordination of this vulnerability.