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- Snyk ID SNYK-DEBIAN11-CURL-3066040
- published 27 Oct 2022
- disclosed 29 Oct 2022
Introduced: 27 Oct 2022CVE-2022-42916 Open this link in a new tab
How to fix?
There is no fixed version for
Note: Versions mentioned in the description apply only to the upstream
curl package and not the
curl package as distributed by
How to fix? for
Debian:11 relevant fixed versions and status.
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.