CVE-2022-42916
- State
- Published
- Severity
- 7.5 High
- Published
- Oct 29, 2022
- Updated
- Oct 14, 2026
- Reserved
- Oct 13, 2022
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 7.5 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | CISA-ADP |
Weaknesses
- CWE-319 Cleartext Transmission of Sensitive Information
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://curl.se/docs/CVE-2022-42916.html
- FEDORA-2022-01ffde372cvendor-advisory
- FEDORA-2022-39688a779dvendor-advisory
- FEDORA-2022-e9d65906c4vendor-advisory
- https://security.netapp.com/advisory/ntap-20221209-0010/
- GLSA-202212-01vendor-advisory
- [oss-security] 20221221 curl: CVE-2022-43551: Another HSTS bypass via IDNmailing-list
- https://support.apple.com/kb/HT213604
- https://support.apple.com/kb/HT213605
- 20230123 APPLE-SA-2023-01-23-5 macOS Monterey 12.6.3mailing-list
- 20230123 APPLE-SA-2023-01-23-4 macOS Ventura 13.2mailing-list
- https://cert-portal.siemens.com/productcert/html/ssa-892048.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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