cve/2018/CVE-2018-17974.md

### [CVE-2018-17974](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-17974)
![](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

An issue was discovered in Tcpreplay 4.3.0 beta1. A heap-based buffer over-read was triggered in the function dlt_en10mb_encode() of the file plugins/dlt_en10mb/en10mb.c, due to inappropriate values in the function memmove(). The length (pktlen + ctx -> l2len) can be larger than source value (packet + ctx->l2len) because the function fails to ensure the length of a packet is valid. This leads to Denial of Service.

### POC

#### Reference
- https://github.com/SegfaultMasters/covering360/tree/master/tcpreplay
- https://github.com/appneta/tcpreplay/issues/486

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