CVE-2022-39348

Public Exploit
Twisted vulnerable to NameVirtualHost Host header injection

Description

Twisted is an event-based framework for internet applications. Started with version 0.9.4, when the host header does not match a configured host `twisted.web.vhost.NameVirtualHost` will return a `NoResource` resource which renders the Host header unescaped into the 404 response allowing HTML and script injection. In practice this should be very difficult to exploit as being able to modify the Host header of a normal HTTP request implies that one is already in a privileged position. This issue was fixed in version 22.10.0rc1. There are no known workarounds.

Category

5.4
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.11%
Vendor Advisory gentoo.org
Affected: twisted twisted
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2022-39348?
CVE-2022-39348 has been scored as a medium severity vulnerability.
How to fix CVE-2022-39348?
To fix CVE-2022-39348, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2022-39348 being actively exploited in the wild?
It is possible that CVE-2022-39348 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2022-39348?
CVE-2022-39348 affects twisted twisted.
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