CVE-2022-23093 Stack overflow in ping(8)
A remote attacker can cause a stack buffer overflow in the FreeBSD ping utility, leading to a denial of service crash.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2022-23093?
CVE-2022-23093 is a medium-severity memory corruption vulnerability in Freebsd Freebsd, published on 15 Feb 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
ping reads raw IP packets from the network to process responses in the pr_pack() 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 pr_pack() 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, pr_pack() 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.
Weakness: CWE-120
Which versions are affected by CVE-2022-23093?
It affects 1 product.
Products include Freebsd Freebsd.
How do I fix CVE-2022-23093?
No fix has been published for CVE-2022-23093 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2022-23093 being exploited?
There is no known exploitation of CVE-2022-23093 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in Freebsd Freebsd
Sources
Also known as GHSA-7p28-5p54-rq49.