vulnerability

Rocky Linux: CVE-2023-27535: curl (RLSA-2023-3106)

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:C/I:N/A:N)
Published
Mar 30, 2023
Added
Mar 5, 2024
Modified
Aug 13, 2025

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.

Solutions

rocky-upgrade-curlrocky-upgrade-curl-debuginforocky-upgrade-curl-debugsourcerocky-upgrade-libcurlrocky-upgrade-libcurl-debuginforocky-upgrade-libcurl-develrocky-upgrade-libcurl-minimalrocky-upgrade-libcurl-minimal-debuginfo
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