Medium · published August 6, 2021
curl supports the `-t` command line option, known as `CURLOPT_TELNETOPTIONS`in libcurl. This rarely used option is used to send variable=content pairs toTELNET servers.Due to flaw in the option parser for sending `NEW_ENV` variables, libcurlcould be made to pass on uninitialized data from a stack based buffer to theserver. Therefore potentially revealing sensitive internal information to theserver using a clear-text network protocol.This could happen because curl did not call and use sscanf() correctly whenparsing the string provided by the application.
| Product | Versions | Fixed in |
|---|---|---|
| haxx/curl | ≥ 7.7, < 7.78.0 | 7.78.0 |
| fedoraproject/fedora | all versions | — |
| netapp/cloud_backup | all versions | — |
| netapp/clustered_data_ontap | all versions | — |
| netapp/hci_management_node | all versions | — |
| netapp/solidfire | all versions | — |
| apple/mac_os_x | all versions | — |
| apple/mac_os_x | all versions | — |
| apple/mac_os_x | all versions | — |
| apple/mac_os_x | all versions | — |
| apple/mac_os_x | all versions | — |
| apple/macos | all versions | — |
| apple/macos | all versions | — |
| apple/macos | all versions | — |
| apple/macos | all versions | — |
| apple/macos | all versions | — |
| apple/macos | all versions | — |
| apple/macos | all versions | — |
| apple/macos | all versions | — |
| apple/macos | all versions | — |
| apple/macos | all versions | — |
| oracle/mysql_server | ≥ 5.7.0, ≤ 5.7.35 | — |
| oracle/mysql_server | ≥ 8.0.0, ≤ 8.0.26 | — |
| oracle/peoplesoft_enterprise_peopletools | all versions | — |
| oracle/peoplesoft_enterprise_peopletools | all versions | — |
| oracle/peoplesoft_enterprise_peopletools | all versions | — |
| siemens/sinec_infrastructure_network_services | < 1.0.1.1 | 1.0.1.1 |
| siemens/sinema_remote_connect_server | < 3.1 | 3.1 |
| netapp/h300s_firmware | all versions | — |
| netapp/h500s_firmware | all versions | — |
| netapp/h700s_firmware | all versions | — |
| netapp/h300e_firmware | all versions | — |
| netapp/h500e_firmware | all versions | — |
| netapp/h700e_firmware | all versions | — |
| netapp/h410s_firmware | all versions | — |
| 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 | — |