CVE-2016-5673 Server-side request forgery in n/a
Remote attackers can exploit UltraVNC Repeater to gain open-proxy functionality by bypassing destination restrictions, potentially enabling unauthorized network access.
- 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-2016-5673?
CVE-2016-5673 is a high-severity server-side request forgery vulnerability in n/a, published on 25 Aug 2016. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
UltraVNC Repeater before 1300 does not restrict destination IP addresses or TCP ports, which allows remote attackers to obtain open-proxy functionality by using a :: substring in between the IP address and port number.
Weakness: CWE-284
Which versions are affected by CVE-2016-5673?
It affects 1 product.
Products include Ultravnc Repeater.
How do I fix CVE-2016-5673?
No fix has been published for CVE-2016-5673 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2016-5673 being exploited?
There is no known exploitation of CVE-2016-5673 in the wild and no public exploit code.
Sources
Also known as GHSA-529m-7v26-xfh8.