cve/2017/CVE-2017-17725.md

### [CVE-2017-17725](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17725)
![](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 an integer overflow leading to a heap-based buffer over-read in the Exiv2::getULong function in types.cpp. Remote attackers can exploit the vulnerability to cause a denial of service via a crafted image file. Note that this vulnerability is different from CVE-2017-14864, which is an invalid memory address dereference.

### POC

#### Reference
- https://bugzilla.redhat.com/show_bug.cgi?id=1525055
- https://github.com/Exiv2/exiv2/issues/188

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