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.
How to fix
- splunk universal_forwarder8.2.12, 9.0.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| haxx libcurl | 7.13.0 ≤ v ≤ 7.88.1 | — |
| fedoraproject fedora | 36 | — |
| debian debian_linux | 10.0 | — |
| netapp active_iq_unified_manager | No range specified | — |
| netapp ontap_9 | No range specified | — |
| netapp h300s_firmware | No range specified | — |
| netapp h500s_firmware | No range specified | — |
| netapp h700s_firmware | No range specified | — |
| netapp h410s_firmware | No range specified | — |
| splunk universal_forwarder | 8.2.0 ≤ v < 8.2.12, 9.0.0 ≤ v < 9.0.6, 9.1.0 | 8.2.12, 9.0.6 |
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