CVE-2023-47627 : Vulnerability Insights and Analysis

A security vulnerability has been identified in the aiohttp library, affecting versions prior to 3.8.6. This vulnerability could allow malicious actors to perform HTTP request smuggling, potentially leading to unauthorized access.

Understanding CVE-2023-47627

This CVE pertains to the aiohttp library, specifically related to issues in HTTP header parsing, potentially enabling request smuggling attacks.

What is CVE-2023-47627?

The vulnerability in aiohttp exposes a flaw in the HTTP parser, allowing for inconsistent interpretation of HTTP requests, which can be exploited for request smuggling.

The Impact of CVE-2023-47627

The impact of this vulnerability could result in unauthorized access, data manipulation, or other malicious activities due to the incorrect handling of HTTP headers.

Technical Details of CVE-2023-47627

The vulnerability affects aiohttp versions prior to 3.8.6, with the HTTP parser being the focal point of exploitation.

Vulnerability Description

The HTTP parser in aiohttp has issues with header parsing, leading to potential request smuggling when AIOHTTP_NO_EXTENSIONS is enabled. Upgrading to version 3.8.6 is necessary to mitigate this risk.

Affected Systems and Versions

Vendor: aio-libs
Product: aiohttp
Affected Versions: < 3.8.6

Exploitation Mechanism

Malicious actors can exploit the inconsistent interpretation of HTTP requests to manipulate requests, possibly bypassing security controls.

Mitigation and Prevention

To address CVE-2023-47627, users are advised to take immediate steps and adopt long-term security practices.

Immediate Steps to Take

Upgrade aiohttp to version 3.8.6 or higher to patch the vulnerability and prevent potential exploitation.

Long-Term Security Practices

Regularly update software components to ensure the latest security patches are in place.

Patching and Updates

Refer to the GitHub advisory here for detailed information on the vulnerability and the patch provided by the aiohttp team.