CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
EPSS
Percentile
51.5%
A use after free vulnerability exists in curl <7.87.0. Curl can be asked to tunnel virtually all protocols it supports through an HTTP proxy. HTTP proxies can (and often do) deny such tunnel operations. When getting denied to tunnel the specific protocols SMB or TELNET, curl would use a heap-allocated struct after it had been freed, in its transfer shutdown code path.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
Debian | 12 | all | curl | < 7.86.0-3 | curl_7.86.0-3_all.deb |
Debian | 11 | all | curl | < 7.74.0-1.3+deb11u5 | curl_7.74.0-1.3+deb11u5_all.deb |
Debian | 999 | all | curl | < 7.86.0-3 | curl_7.86.0-3_all.deb |
Debian | 13 | all | curl | < 7.86.0-3 | curl_7.86.0-3_all.deb |