CVE-2023-38562 Use after free in uC-TCP-IP
A double-free in Weston Embedded uC-TCP-IP allows remote attackers to execute arbitrary code via crafted network packets.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2023-38562?
CVE-2023-38562 is a high-severity use after free vulnerability in Weston Embedded uC-TCP-IP, published on 20 Feb 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A double-free vulnerability exists in the IP header loopback parsing functionality of Weston Embedded uC-TCP-IP v3.06.01. A specially crafted set of network packets can lead to memory corruption, potentially resulting in code execution. An attacker can send a sequence of unauthenticated packets to trigger this vulnerability.
Weakness: CWE-415
Which versions are affected by CVE-2023-38562?
It affects 1 product.
Products include Weston-Embedded Uc-Tcp-Ip.
How do I fix CVE-2023-38562?
No fix has been published for CVE-2023-38562 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2023-38562 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-38562 exists.
Other vulnerabilities in Weston Embedded uC-TCP-IP
Sources
Also known as GHSA-43mr-mm46-m2qq.