### [CVE-2019-17263](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17263)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

** DISPUTED ** In libyal libfwsi before 20191006, libfwsi_extension_block_copy_from_byte_stream in libfwsi_extension_block.c has a heap-based buffer over-read because rejection of an unsupported size only considers values less than 6, even though values of 6 and 7 are also unsupported. NOTE: the vendor has disputed this as described in the GitHub issue.

### POC

#### Reference
- http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html
- http://packetstormsecurity.com/files/154774/libyal-libfwsi-Buffer-Overread.html
- https://github.com/libyal/libfwsi/issues/13
- https://github.com/libyal/libfwsi/issues/13

#### Github
No PoCs found on GitHub currently.