Unknown · Pfsense Pfblockerng · CVE-2022-31814
**Name of the Vulnerable Software and Affected Versions**
pfSense pfBlockerNG versions 2.1.4 26 and earlier
**Description**
The issue allows remote attackers to execute arbitrary OS commands as root via shell metacharacters in the `HTTP Host` header. It is estimated that over 388,000 devices may be affected. A proof-of-concept exploit is available, and there have been reports of this issue being exploited in the wild. The vulnerability can be exploited through the `HTTP Host` header, allowing attackers to execute arbitrary OS commands.
**Recommendations**
For pfSense pfBlockerNG versions 2.1.4 26 and earlier, consider disabling the vulnerable component until a patch is available. Restrict access to the `HTTP Host` header to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.