Description
curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session ticket arrives over a connection. A malicious server can use this in rare unfortunate circumstances to potentially reach remote code execution in the client. When libcurl at run-time sets up support for TLS 1.3 session tickets on a connection using OpenSSL, it stores pointers to the transfer in-memory object for later retrieval when a session ticket arrives. If the connection is used by multiple transfers (like with a reused HTTP/1.1 connection or multiplexed HTTP/2 connection) that first transfer object might be freed before the new session is established on that connection and then the function will access a memory buffer that might be freed. When using that memory, libcurl might even call a function pointer in the object, making it possible for a remote code execution if the server could somehow manage to get crafted memory content into the correct place in memory.
CVSS breakdown
Affected products
- haxx / curl7.75.0 – 7.76.1
- NetApp / active_iq_unified_manager
- NetApp / active_iq_unified_manager
- NetApp / cloud_backup
- NetApp / h300e_firmware
- NetApp / h300s_firmware
- NetApp / h410s_firmware
- NetApp / h500e_firmware
- NetApp / h500s_firmware
- NetApp / h700e_firmware
- NetApp / h700s_firmware
- NetApp / hci_compute_node_firmware
- NetApp / OnCommand Insight
- NetApp / OnCommand Workflow Automation
- NetApp / SnapCenter
- NetApp / solidfire_baseboard_management_controller_firmware
- NetApp / solidfire,_enterprise_sds_&_hci_storage_node
- NetApp / solidfire_&_hci_management_node
- oracle / communications_cloud_native_core_binding_support_function1.11.0 – 1.11.0
- oracle / communications_cloud_native_core_network_function_cloud_native_environment1.10.0 – 1.10.0
- oracle / communications_cloud_native_core_network_repository_function1.15.1 – 1.15.1
- oracle / communications_cloud_native_core_network_repository_function1.15.0 – 1.15.0
- oracle / communications_cloud_native_core_network_slice_selection_function1.8.0 – 1.8.0
- oracle / communications_cloud_native_core_service_communication_proxy1.15.0 – 1.15.0
- oracle / essbase11.1.2.4.047
- oracle / mysql_server5.7.34
- Siemens / sinec_infrastructure_network_services1.0.1.1
- Splunk / Universal Forwarder8.2.0 – 8.2.12
- Splunk / Universal Forwarder9.1.0 – 9.1.0
References
- MISChttps://hackerone.com/reports/1180380
- MISChttps://curl.se/docs/CVE-2021-22901.html
- PATCHhttps://github.com/curl/curl/commit/7f4a9a9b2a49547eae24d2e19bc5c346e9026479
- VENDOR_ADVISORYhttps://www.oracle.com//security-alerts/cpujul2021.html
- MISChttps://security.netapp.com/advisory/ntap-20210723-0001/
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpujan2022.html
- MISChttps://security.netapp.com/advisory/ntap-20210727-0007/
- VENDOR_ADVISORYhttps://www.oracle.com/security-alerts/cpuapr2022.html
- MISChttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- MISChttps://cert-portal.siemens.com/productcert/pdf/ssa-732250.pdf