curl 7.63.0 to and including 7.75.0 includes vulnerability that allows a malicious HTTPS proxy to MITM a connection due to bad handling of TLS 1.3 session tickets. When using a HTTPS proxy and TLS 1.3, libcurl can confuse session tickets arriving from the HTTPS proxy but work as if they arrived from the remote server and then wrongly "short-cut" the host handshake. When confusing the tickets, a HTTPS proxy can trick libcurl to use the wrong session ticket resume for the host and thereby circumvent the server TLS certificate check and make a MITM attack to be possible to perform unnoticed. Note that such a malicious HTTPS proxy needs to provide a certificate that curl will accept for the MITMed server for an attack to work - unless curl has been told to ignore the server certificate check.
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No Fix Known
No patch has been released yet. Apply workarounds or mitigations where available.
| Vendor | Product | Versions | Fixed In |
|---|---|---|---|
| haxx | libcurl | 7.63.0 - 7.75.0 | - |
| fedoraproject | fedora | - |
Published
CVE disclosed publicly
Last Modified
Most recent update
Indexed to CVEInsight
Added to this platform
AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
15
Affected Products
18
References
haxx / libcurl +14 more
| - |
| fedoraproject | fedora | - | - |
| fedoraproject | fedora | - | - |
| netapp | hci_management_node | - | - |
| netapp | solidfire | - | - |
| netapp | hci_storage_node | - | - |
| broadcom | fabric_operating_system | - | - |
| debian | debian_linux | - | - |
| siemens | sinec_infrastructure_network_services | 1.0.1.1 | - |
| oracle | communications_billing_and_revenue_management | - | - |
| oracle | essbase | - | - |
| splunk | universal_forwarder | 8.2.0 - 8.2.12 | - |
| splunk | universal_forwarder | 9.0.0 - 9.0.6 | - |
| splunk | universal_forwarder | - | - |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Exploitability
Impact