CVE-2017-4940 Cross-site scripting in ESXi
Stored XSS in VMware ESXi Host Client allows attackers to inject JavaScript executed by other users, potentially leading to session hijacking or malicious actions.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-4940?
CVE-2017-4940 is a medium-severity cross-site scripting vulnerability in Vmware Esxi, published on 20 Dec 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The ESXi Host Client in VMware ESXi (6.5 before ESXi650-201712103-SG, 5.5 before ESXi600-201711103-SG and 5.5 before ESXi550-201709102-SG) contains a vulnerability that may allow for stored cross-site scripting (XSS). An attacker can exploit this vulnerability by injecting Javascript, which might get executed when other users access the Host Client.
Weakness: CWE-79
Which versions are affected by CVE-2017-4940?
It affects 1 product.
Products include Vmware Esxi.
How do I fix CVE-2017-4940?
No fix has been published for CVE-2017-4940 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2017-4940 being exploited?
There is no known exploitation of CVE-2017-4940 in the wild and no public exploit code.
Other vulnerabilities in Vmware Esxi
Sources
Also known as GHSA-29hc-rp6w-74v3.