Medium · published March 31, 2023
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.
| Product | Versions | Fixed in |
|---|---|---|
| splunk/universal_forwarder | ≥ 8.2.0, < 8.2.12 | 8.2.12 |
| splunk/universal_forwarder | ≥ 9.0.0, < 9.0.6 | 9.0.6 |
| splunk/universal_forwarder | all versions | — |
| haxx/libcurl | ≥ 7.13.0, ≤ 7.88.1 | — |
| fedoraproject/fedora | all versions | — |
| debian/debian_linux | all versions | — |
| netapp/active_iq_unified_manager | all versions | — |
| netapp/ontap_9 | all versions | — |
| netapp/h300s_firmware | all versions | — |
| netapp/h500s_firmware | all versions | — |
| netapp/h700s_firmware | all versions | — |
| netapp/h410s_firmware | all versions | — |