cve/2018/CVE-2018-18520.md

### [CVE-2018-18520](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-18520)
![](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 Invalid Memory Address Dereference exists in the function elf_end in libelf in elfutils through v0.174. Although eu-size is intended to support ar files inside ar files, handle_ar in size.c closes the outer ar file before handling all inner entries. The vulnerability allows attackers to cause a denial of service (application crash) with a crafted ELF file.

### POC

#### Reference
- https://sourceware.org/bugzilla/show_bug.cgi?id=23787

#### Github
- https://github.com/flyrev/security-scan-ci-presentation
- https://github.com/kaidotdev/kube-trivy-exporter