Twisted up to 22.9.x HTTP Request cross site scripting

Summaryinfo

A vulnerability was found in Twisted up to 22.9.x and classified as problematic. The affected element is an unknown function of the component HTTP Request Handler. The manipulation results in cross site scripting. This vulnerability was named CVE-2022-39348. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Twisted up to 22.9.x. Affected is an unknown code of the component HTTP Request Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. CVE summarizes:

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.

The weakness was presented 10/27/2022 as GHSA-vg46-2rrj-3647. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2022-39348 since 09/02/2022. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1059.007.

The vulnerability scanner Nessus provides a plugin with the ID 211959 (Debian dla-3970 : python3-twisted - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 22.10.0rc1 eliminates this vulnerability. Applying the patch f2f5e81c03f14e253e85fe457e646130780db40b is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (211959). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

• Twisted

Version

• 22.0
• 22.1
• 22.2
• 22.3
• 22.4
• 22.5
• 22.6
• 22.7
• 22.8
• 22.9

License

• open-source

Website

• Product: https://github.com/twisted/twisted/

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VulDB is the best source for vulnerability data and more expert information about this specific topic.

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