4.3
CVE-2021-22890
- EPSS 0.13%
- Published 01.04.2021 18:15:12
- Last modified 09.06.2025 15:15:24
- Source support@hackerone.com
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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.
Data is provided by the National Vulnerability Database (NVD)
Fedoraproject ≫ Fedora Version32
Fedoraproject ≫ Fedora Version33
Fedoraproject ≫ Fedora Version34
Netapp ≫ Hci Management Node Version-
Netapp ≫ Hci Storage Node Version-
Broadcom ≫ Fabric Operating System Version-
Debian ≫ Debian Linux Version9.0
Siemens ≫ Sinec Infrastructure Network Services Version < 1.0.1.1
Oracle ≫ Communications Billing And Revenue Management Version12.0.0.3.0
Splunk ≫ Universal Forwarder Version >= 8.2.0 < 8.2.12
Splunk ≫ Universal Forwarder Version >= 9.0.0 < 9.0.6
Splunk ≫ Universal Forwarder Version9.1.0
Zu dieser CVE wurde keine CISA KEV oder CERT.AT-Warnung gefunden.
| Type | Source | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 0.13% | 0.325 |
| Source | Base Score | Exploit Score | Impact Score | Vector string |
|---|---|---|---|---|
| nvd@nist.gov | 3.7 | 2.2 | 1.4 |
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
|
| nvd@nist.gov | 4.3 | 8.6 | 2.9 |
AV:N/AC:M/Au:N/C:N/I:P/A:N
|
| 134c704f-9b21-4f2e-91b3-4a467353bcc0 | 4.3 | 2.8 | 1.4 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
|
CWE-290 Authentication Bypass by Spoofing
This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks.
CWE-300 Channel Accessible by Non-Endpoint
The product does not adequately verify the identity of actors at both ends of a communication channel, or does not adequately ensure the integrity of the channel, in a way that allows the channel to be accessed or influenced by an actor that is not an endpoint.