Adobe Acrobat Pro DC XPS TIFF dir Parsing Out-Of-Bounds Write Remote Code Execution Vulnerability
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 dir chunks in TIFF images embedded inside 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.
Additional Details
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
- 2017-08-04 - Vulnerability reported to vendor
- 2017-11-14 - Coordinated public release of advisory
Credit
Ke Liu of Tencent's Xuanwu LAB
