CVE-2022-23093: Stack overflow in ping(8)
ping reads raw IP packets from the network to process responses in the prpack() function. As part of processing a response ping has to reconstruct the IP header, the ICMP header and if present a "quoted packet," which represents the packet that generated an ICMP error. The quoted packet again has an IP header and an ICMP header.
The prpack() copies received IP and ICMP headers into stack buffers for further processing. In so doing, it fails to take into account the possible presence of IP option headers following the IP header in either the response or the quoted packet. When IP options are present, prpack() overflows the destination buffer by up to 40 bytes.
The memory safety bugs described above can be triggered by a remote host, causing the ping program to crash.
The ping process runs in a capability mode sandbox on all affected versions of FreeBSD and is thus very constrained in how it can interact with the rest of the system at the point where the bug can occur.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2022-23093?
CVE-2022-23093 is considered to be of medium severity due to potential security risks associated with processing raw IP packets.
How do I fix CVE-2022-23093?
To fix CVE-2022-23093, update to the latest version of the FreeBSD ping utility that addresses the vulnerability.
What systems are affected by CVE-2022-23093?
CVE-2022-23093 affects the FreeBSD ping utility across all its versions, without specific version limitations.
Can CVE-2022-23093 lead to code execution?
Yes, CVE-2022-23093 could potentially allow an attacker to craft malicious packets that might lead to arbitrary code execution.
Is CVE-2022-23093 being actively exploited?
As of the latest reports, there is no active exploitation of CVE-2022-23093 confirmed, but it poses a risk if left unpatched.