CVEs-PoC/2021/CVE-2021-22918.md

### [CVE-2021-22918](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-22918)
![](https://img.shields.io/static/v1?label=Product&message=Node&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=10.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=11.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=12.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=13.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=14.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=15.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=16.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=4.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=5.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=6.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=7.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=8.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Version&message=9.0%20&color=brightgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Out-of-bounds%20Read%20(CWE-125)&color=brightgreen)

### Description

Node.js before 16.4.1, 14.17.2, 12.22.2 is vulnerable to an out-of-bounds read when uv__idna_toascii() is used to convert strings to ASCII. The pointer p is read and increased without checking whether it is beyond pe, with the latter holding a pointer to the end of the buffer. This can lead to information disclosures or crashes. This function can be triggered via uv_getaddrinfo().

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/20142995/nuclei-templates
- https://github.com/GitHubForSnap/knot-resolver-gael
- https://github.com/cyb3r-w0lf/nuclei-template-collection