cve/2019/CVE-2019-17263.md

### [CVE-2019-17263](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17263)
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### 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
- https://github.com/libyal/libfwsi/issues/13

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