CVE-2019-8275 Null dereference in UltraVNC

Critical 9.8 Published 9 Mar 2019 Updated 17 Sep 2024

Remote attackers can access out-of-bound data or cause denial of service in UltraVNC server due to improper null termination.

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-2019-8275?

CVE-2019-8275 is a critical vulnerability in Kaspersky Lab UltraVNC, published on 9 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

UltraVNC revision 1211 has multiple improper null termination vulnerabilities in VNC server code, which result in out-of-bound data being accessed by remote users. This attack appears to be exploitable via network connectivity. These vulnerabilities have been fixed in revision 1212.

Weakness: CWE-170

Which versions are affected by CVE-2019-8275?

It affects 4 products.

Products include Siemens Sinumerik Access Mymachine\/P2p, Siemens Sinumerik Pcu Base Win10 Software\/Ipc, Siemens Sinumerik Pcu Base Win7 Software\/Ipc, Uvnc Ultravnc.

How do I fix CVE-2019-8275?

No fix has been published for CVE-2019-8275 yet. Limit exposure of the affected software until one is available.

Is CVE-2019-8275 being exploited?

There is no known exploitation of CVE-2019-8275 in the wild and no public exploit code.

Sources

Also known as GHSA-hhw7-p92g-vp7v.