CVE-2024-42353

Description

WebOb provides objects for HTTP requests and responses. When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python's urlparse, and joining it to the base URL. `urlparse` however treats a `//` at the start of a string as a URI without a scheme, and then treats the next part as the hostname. `urljoin` will then use that hostname from the second part as the hostname replacing the original one from the request. This vulnerability is patched in WebOb version 1.8.8.

How to fix CVE-2024-42353

To remediate CVE-2024-42353, upgrade the affected package to a fixed version below.

• —no fix listed
• —upgrade to 1.8.8 or later
• —upgrade to f689bcf4f0a1f64f1735b1d5069aef5be6974b5b or later

Is CVE-2024-42353 being exploited?

Low — EPSS is 0.3%, meaning exploitation activity has not been observed at scale.

Affected packages (3)

• from 0
• from 0, < 1.8.8
• from 0, < f689bcf4f0a1f64f1735b1d5069aef5be6974b5b | from 0, < 1.8.8

CVSS scores

References (6)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2024-42353
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2024-42353
• PATCHgithub.com/Pylons/webob
• WEBgithub.com/Pylons/webob/commit/f689bcf4f0a1f64f1735b1d5069aef5be6974b5b