### [CVE-2011-3489](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-3489)
![](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

RnaUtility.dll in RsvcHost.exe 2.30.0.23 in Rockwell RSLogix 19 and earlier allows remote attackers to cause a denial of service (crash) via a crafted rna packet with a long string to TCP port 4446 that triggers (1) "a memset zero overflow" or (2) an out-of-bounds read, related to improper handling of a 32-bit size field.

### POC

#### Reference
- http://aluigi.altervista.org/adv/rslogix_1-adv.txt
- http://securityreason.com/securityalert/8383

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