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.
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cve-icon MITRE

Status: PUBLISHED

Assigner: hackerone

Published: 2023-02-09T00:00:00

Updated: 2024-08-03T13:32:59.678Z

Reserved: 2022-10-20T00:00:00

Link: CVE-2022-43552

cve-icon Vulnrichment

Updated: 2024-08-03T13:32:59.678Z

cve-icon NVD

Status : Analyzed

Published: 2023-02-09T20:15:10.950

Modified: 2024-03-27T14:55:09.493

Link: CVE-2022-43552

cve-icon Redhat

Severity : Low

Publid Date: 2022-12-21T00:00:00Z

Links: CVE-2022-43552 - Bugzilla