urllib3 up to 1.26.17/2.0.6 on Python HTTP Redirect information disclosure

Summaryinfo

A vulnerability labeled as problematic has been found in urllib3 up to 1.26.17/2.0.6 on Python. Affected by this issue is some unknown functionality of the component HTTP Redirect Handler. The manipulation results in information disclosure. This vulnerability is identified as CVE-2023-45803. The attack can only be performed from the local network. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in urllib3 up to 1.26.17/2.0.6 on Python. It has been classified as problematic. Affected is an unknown part of the component HTTP Redirect Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. CVE summarizes:

urllib3 is a user-friendly HTTP client library for Python. urllib3 previously wouldn't remove the HTTP request body when an HTTP redirect response using status 301, 302, or 303 after the request had its method changed from one that could accept a request body (like `POST`) to `GET` as is required by HTTP RFCs. Although this behavior is not specified in the section for redirects, it can be inferred by piecing together information from different sections and we have observed the behavior in other major HTTP client implementations like curl and web browsers. Because the vulnerability requires a previously trusted service to become compromised in order to have an impact on confidentiality we believe the exploitability of this vulnerability is low. Additionally, many users aren't putting sensitive data in HTTP request bodies, if this is the case then this vulnerability isn't exploitable. Both of the following conditions must be true to be affected by this vulnerability: 1. Using urllib3 and submitting sensitive information in the HTTP request body (such as form data or JSON) and 2. The origin service is compromised and starts redirecting using 301, 302, or 303 to a malicious peer or the redirected-to service becomes compromised. This issue has been addressed in versions 1.26.18 and 2.0.7 and users are advised to update to resolve this issue. Users unable to update should disable redirects for services that aren't expecting to respond with redirects with `redirects=False` and disable automatic redirects with `redirects=False` and handle 301, 302, and 303 redirects manually by stripping the HTTP request body.

The weakness was released 10/18/2023 as GHSA-g4mx-q9vg-27p4. The advisory is available at github.com. This vulnerability is traded as CVE-2023-45803 since 10/13/2023. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1592 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 209788 (EulerOS Virtualization 2.12.0 : python-pip (EulerOS-SA-2024-2778)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.26.18 or 2.0.7 eliminates this vulnerability. Applying the patch 4e98d57809dacab1cbe625fddeec1a290c478ea9 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 databases at Tenable (209788) and CERT Bund (WID-SEC-2024-1228). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Red Hat Enterprise Linux
• Red Hat OpenStack
• IBM MQ
• Red Hat OpenShift

Productinfo

Name

• urllib3

Version

• 1.26.0
• 1.26.1
• 1.26.2
• 1.26.3
• 1.26.4
• 1.26.5
• 1.26.6
• 1.26.7
• 1.26.8
• 1.26.9
• 1.26.10
• 1.26.11
• 1.26.12
• 1.26.13
• 1.26.14
• 1.26.15
• 1.26.16
• 1.26.17
• 2.0.0
• 2.0.1
• 2.0.2
• 2.0.3
• 2.0.4
• 2.0.5
• 2.0.6

License

• open-source

Website

• Product: https://github.com/urllib3/urllib3/

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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