cve/2018/CVE-2018-20482.md

### [CVE-2018-20482](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20482)
![](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

GNU Tar through 1.30, when --sparse is used, mishandles file shrinkage during read access, which allows local users to cause a denial of service (infinite read loop in sparse_dump_region in sparse.c) by modifying a file that is supposed to be archived by a different user's process (e.g., a system backup running as root).

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/KorayAgaya/TrivyWeb
- https://github.com/Mohzeela/external-secret
- https://github.com/flyrev/security-scan-ci-presentation
- https://github.com/siddharthraopotukuchi/trivy
- https://github.com/simiyo/trivy
- https://github.com/t31m0/Vulnerability-Scanner-for-Containers
- https://github.com/umahari/security