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.
References
| Link | Resource |
|---|---|
| https://hackerone.com/reports/1129529 | Permissions Required Third Party Advisory |
| https://curl.se/docs/CVE-2021-22890.html | Patch Vendor Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ITVWPVGLFISU5BJC2BXBRYSDXTXE2YGC/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KQUIOYX2KUU6FIUZVB5WWZ6JHSSYSQWJ/ | Mailing List Third Party Advisory |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2ZC5BMIOKLBQJSFCHEDN2G2C2SH274BP/ | Mailing List Third Party Advisory |
| https://security.netapp.com/advisory/ntap-20210521-0007/ | Third Party Advisory |
| https://security.gentoo.org/glsa/202105-36 | Third Party Advisory |
Configurations
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Information
Published : 2021-04-01 18:15
Updated : 2021-07-20 23:15
NVD link : CVE-2021-22890
Mitre link : CVE-2021-22890
JSON object : View
Products Affected
debian
- debian_linux
netapp
- solidfire
- hci_management_node
- hci_storage_node
fedoraproject
- fedora
haxx
- libcurl
broadcom
- fabric_operating_system
CWE
CWE-290
Authentication Bypass by Spoofing
