In curl before 7.86.0, the HSTS check could be bypassed to trick it into staying with HTTP. Using its HSTS support, curl can be instructed to use HTTPS directly (instead of using an insecure cleartext HTTP step) even when HTTP is provided in the URL. This mechanism could be bypassed if the host name in the given URL uses IDN characters that get replaced with ASCII counterparts as part of the IDN conversion, e.g., using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop of U+002E (.). The earliest affected version is 7.77.0 2021-05-26.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2022-10-29T00:00:00

Updated: 2024-08-03T13:19:05.420Z

Reserved: 2022-10-13T00:00:00

Link: CVE-2022-42916

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Analyzed

Published: 2022-10-29T02:15:09.047

Modified: 2024-03-27T14:59:02.633

Link: CVE-2022-42916

cve-icon Redhat

Severity : Moderate

Publid Date: 2022-10-26T00:00:00Z

Links: CVE-2022-42916 - Bugzilla