CVE-2022-43551
Description
A vulnerability exists in curl <7.87.0 HSTS check that could be bypassed to trick it to keep using HTTP. Using its HSTS support, curl can be instructed to use HTTPS instead of using an insecure clear-text HTTP step even when HTTP is provided in the URL. However, the HSTS mechanism could be bypassed if the host name in the given URL first uses IDN characters that get replaced to ASCII counterparts as part of the IDN conversion. Like using the character UTF-8 U+3002 (IDEOGRAPHIC FULL STOP) instead of the common ASCII full stop (U+002E) `.`. Then in a subsequent request, it does not detect the HSTS state and makes a clear text transfer. Because it would store the info IDN encoded but look for it IDN decoded.
How to fix
- haxx curl7.87.0 or later
- splunk universal_forwarder8.2.12, 9.0.6 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| haxx curl | 7.77.0 ≤ v < 7.87.0 | 7.87.0 |
| fedoraproject fedora | 37 | — |
| netapp active_iq_unified_manager | No range specified | — |
| netapp oncommand_insight | No range specified | — |
| netapp oncommand_workflow_automation | No range specified | — |
| netapp snapcenter | No range specified | — |
| splunk universal_forwarder | 8.2.0 ≤ v < 8.2.12, 9.0.0 ≤ v < 9.0.6, 9.1.0 | 8.2.12, 9.0.6 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.