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.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2023-03-30T00:00:00

Updated: 2024-08-02T12:16:35.540Z

Reserved: 2023-03-02T00:00:00

Link: CVE-2023-27535

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-03-30T20:15:07.483

Modified: 2024-11-21T07:53:07.093

Link: CVE-2023-27535

cve-icon Redhat

Severity : Moderate

Publid Date: 2023-03-20T00:00:00Z

Links: CVE-2023-27535 - Bugzilla