CVE-2019-8261 Integer overflow in UltraVNC
An integer overflow in UltraVNC's CoRRE decoder allows remote attackers to cause an out-of-bounds read, potentially leading to crashes or data exposure.
- 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-2019-8261?
CVE-2019-8261 is a critical vulnerability in UltraVNC, published on 5 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
UltraVNC revision 1199 has a out-of-bounds read vulnerability in VNC code inside client CoRRE decoder, caused by multiplication overflow. This attack appears to be exploitable via network connectivity. This vulnerability has been fixed in revision 1200.
Weakness: CWE-125
Which versions are affected by CVE-2019-8261?
It affects 1 product.
Products include Uvnc Ultravnc.
How do I fix CVE-2019-8261?
No fix has been published for CVE-2019-8261 yet. Limit exposure of the affected software until one is available.
Is CVE-2019-8261 being exploited?
There is no known exploitation of CVE-2019-8261 in the wild and no public exploit code.
Other vulnerabilities in UltraVNC
Sources
Also known as GHSA-frcm-7p38-7j57.