CVE-2018-8879

Stack-based buffer overflow in Asuswrt-Merlin firmware for ASUS devices older than 384.4 and ASUS firmware before 3.0.0.4.382.50470 for devices allows remote…

published November 21, 2019

CVSS
—
EPSS
17%
Percentile
97.1
In the wild
Unconfirmed
What it is

⚠️ A sneaky buffer overflow lurks in Asuswrt-Merlin firmware! By simply tossing a long string into a request on the blocking.asp page, an attacker could execute arbitrary code—yikes! 🔥 Picture this: it’s like a delivery person squeezing an oversized package through a narrow doorframe, causing a heap of chaos inside the house. In this case, the blocking.asp page is that door, and the oversized string is the package that breaks everything! An attacker seizing this opportunity could potentially take full control of your device, leading to anything from data theft to a compromised network. This is not just a blip on the radar; it could pave the way for a much larger breach if left unaddressed!

Put simply

Picture this: it’s like a delivery person squeezing an oversized package through a narrow doorframe, causing a heap of chaos inside the house. In this case, the blocking.asp page is that door, and the oversized string is the package that breaks everything! This vulnerability in the Asuswrt-Merlin firmware stems from a stack-based buffer overflow, allowing remote attackers to inject excessive data into the blocking.asp page via GET or POST requests, targeting vulnerable parameters.

What to do

An attacker seizing this opportunity could potentially take full control of your device, leading to anything from data theft to a compromised network. This is not just a blip on the radar; it could pave the way for a much larger breach if left unaddressed! To mitigate this vulnerability, immediately update your Asuswrt-Merlin firmware to a version above 384.4. If you're running ASUS firmware, ensure it’s updated past version 3.0.0.4.382.50470 as well. Regularly check for updates to stay secure! You’ve got this! Update those firmwares and keep your devices safe and sound! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.17188 · 97.1th percentile
Published
2019-11-21T15:26Z
EPSS history
Timeline
  • 21 NOV 15:26Z
    Stack-based buffer overflow in Asuswrt-Merlin firmware for ASUS devices older than 384.4 and ASUS firmware before 3.0.0.4.382.50470 for devices allows remote…
    cvelistv5