An issue was discovered in Adobe Acrobat Reader 2018.009.20050 and earlier versions, 2017.011.30070 and earlier versions, 2015.006.30394 and earlier versions. This vulnerability is an instance of a use after free vulnerability in the JBIG2 decoder. The vulnerability is triggered by a crafted PDF file that contains a malformed JBIG2 stream. Successful exploitation could lead to arbitrary code execution.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/102995 | vdb entry third party advisory |
| https://helpx.adobe.com/security/products/acrobat/apsb18-02.html | vendor advisory |
| http://www.securitytracker.com/id/1040364 | vdb entry third party advisory |