CVE-2023-6013 H2O Local File Include

Critical 9.3 Published 16 Nov 2023 Updated 27 Nov 2024

Attackers can exploit stored XSS in H2O to trigger Local File Include, potentially executing code or reading sensitive files.

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-2023-6013?

CVE-2023-6013 is a critical cross-site scripting vulnerability in h2oai/h2o-3, published on 16 Nov 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

H2O is vulnerable to stored XSS vulnerability which can lead to a Local File Include attack.

Weakness: CWE-79

Which versions are affected by CVE-2023-6013?

It affects 1 product.

Products include H2o H2o.

How do I fix CVE-2023-6013?

No fix has been published for CVE-2023-6013 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-2023-6013 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-6013 exists.

Sources

Also known as GHSA-3g44-f63g-r9p7.