CVE-2024-4251 Tenda i21 DhcpSetSe fromDhcpSetSer stack-based overflow
Remote attackers can trigger a stack-based buffer overflow in the DHCP configuration handler of Tenda i21 routers, potentially leading to arbitrary code execution.
- 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-2024-4251?
CVE-2024-4251 is a high-severity memory corruption vulnerability in Tenda i21, published on 27 Apr 2024. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability was found in Tenda i21 1.0.0.14(4656). It has been rated as critical. Affected by this issue is the function fromDhcpSetSer of the file /goform/DhcpSetSe. The manipulation of the argument dhcpStartIp/dhcpEndIp/dhcpGw/dhcpMask/dhcpLeaseTime/dhcpDns1/dhcpDns2 leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. VDB-262142 is the identifier assigned to this vulnerability. NOTE: The vendor was contacted early about this disclosure but did not respond in any way.
Which versions are affected by CVE-2024-4251?
It affects 1 product.
Products include Tenda I21 Firmware.
How do I fix CVE-2024-4251?
No fix has been published for CVE-2024-4251 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-2024-4251 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-4251 exists.
Other vulnerabilities in Tenda i21
Sources
Also known as GHSA-3cf7-8394-7xmp.