CVE-2014-8241

XRegion in TigerVNC allows remote VNC servers to cause a denial of service (NULL pointer dereference) by leveraging failure to check a malloc return value, a…

published December 14, 2016

CVSS
—
EPSS
3%
Percentile
87.4
In the wild
Unconfirmed
What it is

⚠️ A sneaky NULL pointer dereference in TigerVNC could leave your remote connections hanging! This vulnerability is like a broken link in a chain, disrupting communication when you need it most. 🔌 Think of it as a delivery system where one critical box is missing. When the delivery team tries to complete the order without it, the entire process halts – customers can't receive their packages, and chaos ensues! 📦 If exploited, this flaw could cause a denial of service, leaving users unable to connect to their VNC sessions. As the connection fails, users are effectively locked out, jeopardizing access to remote systems when they need it the most.

Put simply

Think of it as a delivery system where one critical box is missing. When the delivery team tries to complete the order without it, the entire process halts – customers can't receive their packages, and chaos ensues! 📦 This vulnerability arises from the failure to check the return value of a malloc operation, leading to unexpected NULL pointer dereferences. If a remote VNC server triggers this condition, it can result in a crash or hang of the TigerVNC application.

What to do

If exploited, this flaw could cause a denial of service, leaving users unable to connect to their VNC sessions. As the connection fails, users are effectively locked out, jeopardizing access to remote systems when they need it the most. To remediate this issue, update TigerVNC to the latest version where this vulnerability has been addressed. Additionally, reviewing VNC server configurations and conducting regular audits can help prevent similar issues in the future. You've got this! By taking these steps, you’ll ensure your VNC setup remains robust and reliable. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03063 · 87.4th percentile
Published
2016-12-14T22:00Z
EPSS history
Timeline
  • 14 DEC 22:00Z
    XRegion in TigerVNC allows remote VNC servers to cause a denial of service (NULL pointer dereference) by leveraging failure to check a malloc return value, a…
    cvelistv5