3.7 Low
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.004 Low
EPSS
Percentile
71.7%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Alpine | edge-main | noarch | curl | < 7.76.0-r0 | UNKNOWN |
Alpine | 3.12-main | noarch | curl | < 7.76.0-r0 | UNKNOWN |
Alpine | 3.13-main | noarch | curl | < 7.76.0-r0 | UNKNOWN |
Alpine | 3.14-main | noarch | curl | < 7.76.0-r0 | UNKNOWN |
Alpine | 3.15-main | noarch | curl | < 7.76.0-r0 | UNKNOWN |
Alpine | 3.16-main | noarch | curl | < 7.76.0-r0 | UNKNOWN |
Alpine | 3.17-main | noarch | curl | < 7.76.0-r0 | UNKNOWN |
Alpine | 3.18-main | noarch | curl | < 7.76.0-r0 | UNKNOWN |
Alpine | 3.19-main | noarch | curl | < 7.76.0-r0 | UNKNOWN |
3.7 Low
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
4.3 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:N/I:P/A:N
0.004 Low
EPSS
Percentile
71.7%