cve/2017/CVE-2017-17723.md

### [CVE-2017-17723](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17723)
![](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

In Exiv2 0.26, there is a heap-based buffer over-read in the Exiv2::Image::byteSwap4 function in image.cpp. Remote attackers can exploit this vulnerability to disclose memory data or cause a denial of service via a crafted TIFF file.

### POC

#### Reference
- https://bugzilla.redhat.com/show_bug.cgi?id=1524104

#### Github
- https://github.com/andir/nixos-issue-db-example