cve/2023/CVE-2023-27535.md

CVE-2023-27535

Description

An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.

POC

Reference

No PoCs from references.

Github

• https://github.com/1g-v/DevSec_Docker_lab
• https://github.com/L-ivan7/-.-DevSec_Docker
• https://github.com/fkie-cad/nvd-json-data-feeds
• https://github.com/fokypoky/places-list