VDB
CISA-2022-42916
CISA-2022-42916
PUBLISHED
CVSS 7.5 HIGH
Reported by mitre · Published October 29, 2022
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.
Risk Scores
CVSS 3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
| n/a | n/a | n/a, n/a |
Timeline
- Oct 29, 2022 CVE Published
- Feb 13, 2026 CVE Updated
- Apr 26, 2026 Security Advisory
References
- FEDORA-2022-01ffde372c vendor-advisory
- FEDORA-2022-39688a779d vendor-advisory
- FEDORA-2022-e9d65906c4 vendor-advisory
- GLSA-202212-01 vendor-advisory
- [oss-security] 20221221 curl: CVE-2022-43551: Another HSTS bypass via IDN mailing-list
- 20230123 APPLE-SA-2023-01-23-5 macOS Monterey 12.6.3 mailing-list
- 20230123 APPLE-SA-2023-01-23-4 macOS Ventura 13.2 mailing-list