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.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
haxx libcurl |
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fedoraproject fedora 32 |
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fedoraproject fedora 33 |
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fedoraproject fedora 34 |
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netapp solidfire - |
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netapp hci management node - |
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netapp hci storage node - |
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broadcom fabric operating system - |
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debian debian linux 9.0 |
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siemens sinec infrastructure network services |
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oracle communications billing and revenue management 12.0.0.3.0 |
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oracle essbase 21.2 |
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splunk universal forwarder 9.1.0 |
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splunk universal forwarder |
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