CVE-2024-13503 Stack-Based Buffer Overflow in Newtec's update signaling causes RCE
A stack buffer overflow in the swdownload binary allows remote attackers to execute arbitrary code on Newtec satellite modems.
- 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-2024-13503?
CVE-2024-13503 is a critical memory corruption vulnerability in Newtec/iDirect NTC2218, NTC2250, NTC2299, published on 17 Jan 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') vulnerability in Newtec NTC2218, NTC2250, NTC2299 on Linux, PowerPC, ARM (Updating signaling process in the swdownload binary modules) allows Local Execution of Code, Remote Code Inclusion. This issue affects NTC2218, NTC2250, NTC2299: from 1.0.1.1 through 2.2.6.19. The issue is both present on the PowerPC versions of the modem and the ARM versions.
A stack buffer buffer overflow in the swdownload binary allows attackers to execute arbitrary code. The parse_INFO function uses an unrestricted `sscanf` to read a string of an incoming network packet into a statically sized buffer.
Weakness: CWE-120
Which versions are affected by CVE-2024-13503?
How do I fix CVE-2024-13503?
No fix has been published for CVE-2024-13503 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-2024-13503 being exploited?
There is no known exploitation of CVE-2024-13503 in the wild and no public exploit code.
Sources
Also known as GHSA-99jg-vm4v-24cv.