CVE-2021-22901

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.

• haxx curl (>= 7.75.0 <= 7.76.1) • oracle communications cloud native core binding support function 1.11.0 • oracle communications cloud native core network function cloud native environment 1.10.0 • oracle communications cloud native core network repository function 1.15.0 • oracle communications cloud native core network repository function 1.15.1 • oracle communications cloud native core network slice selection function 1.8.0 • oracle communications cloud native core service communication proxy 1.15.0 • oracle essbase (< 11.1.2.4.047) • oracle essbase (>= 21.0 < 21.3) • oracle mysql server (<= 5.7.34) • oracle mysql server (>= 8.0.0 <= 8.0.25) • netapp active iq unified manager • netapp cloud backup • netapp oncommand insight • netapp oncommand workflow automation • netapp snapcenter • netapp solidfire\, enterprise sds \& hci storage node • netapp solidfire \& hci management node • netapp solidfire baseboard management controller firmware • netapp hci compute node firmware • netapp h300e firmware • netapp h300s firmware • netapp h410s firmware • netapp h500e firmware • netapp h500s firmware • netapp h700e firmware • netapp h700s firmware • siemens sinec infrastructure network services (< 1.0.1.1) • splunk universal forwarder (>= 8.2.0 < 8.2.12) • splunk universal forwarder (>= 9.0.0 < 9.0.6) • splunk universal forwarder 9.1.0