CVE-2019-13455

In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of   expansion in acknowledge.c

published August 27, 2019

CVSS
—
EPSS
2%
Percentile
80.5
In the wild
Unconfirmed
What it is

⚠️ A stack-based buffer overflow lurks in Xymon's alert acknowledgment CGI tool! The way unchecked input expands could lead to some serious chaos. 🔥 Think of it like a restaurant that keeps accepting larger and larger delivery orders without checking if they can actually handle the volume — soon enough, they'll be knee-deep in spaghetti and chaos! If exploited, an attacker could disrupt services or even crash the entire application. It might not be the most sensational breach, but it definitely leaves a sour taste in the mouth of your server!

Put simply

Think of it like a restaurant that keeps accepting larger and larger delivery orders without checking if they can actually handle the volume — soon enough, they'll be knee-deep in spaghetti and chaos! This vulnerability arises from improper handling of input in 'acknowledge.c', where a stack-based buffer overflow allows an attacker to overwrite adjacent memory. This can lead to unexpected behavior or crashes.

What to do

If exploited, an attacker could disrupt services or even crash the entire application. It might not be the most sensational breach, but it definitely leaves a sour taste in the mouth of your server! To mitigate this issue, update Xymon to version 4.3.29 or later immediately. Additionally, consider implementing input validation to ensure that no oversized data enters your system in the future. You’ve got this! With a quick update and a little diligence, you can keep your systems running smoothly! 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01994 · 80.5th percentile
Published
2019-08-27T16:28Z
EPSS history
Timeline
  • 27 AUG 16:28Z
    In Xymon through 4.3.28, a stack-based buffer overflow vulnerability exists in the alert acknowledgment CGI tool because of   expansion in acknowledge.c
    cvelistv5