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.
References
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History
No history.
Information
Published : 2021-06-11 16:15
Updated : 2024-11-21 05:50
NVD link : CVE-2021-22901
Mitre link : CVE-2021-22901
CVE.ORG link : CVE-2021-22901
JSON object : View
Products Affected
netapp
- h500e
- snapcenter
- h700e_firmware
- h700e
- hci_compute_node_firmware
- h500s_firmware
- hci_compute_node
- h300s_firmware
- h410s_firmware
- h300e
- active_iq_unified_manager
- cloud_backup
- h500e_firmware
- solidfire_baseboard_management_controller_firmware
- h700s
- h300e_firmware
- h700s_firmware
- solidfire\,_enterprise_sds_\&_hci_storage_node
- h300s
- oncommand_workflow_automation
- h500s
- oncommand_insight
- h410s
- solidfire_\&_hci_management_node
oracle
- essbase
- communications_cloud_native_core_binding_support_function
- mysql_server
- communications_cloud_native_core_network_function_cloud_native_environment
- communications_cloud_native_core_network_repository_function
- communications_cloud_native_core_network_slice_selection_function
- communications_cloud_native_core_service_communication_proxy
splunk
- universal_forwarder
haxx
- curl
siemens
- sinec_infrastructure_network_services
CWE
CWE-416
Use After Free