CURL-CVE-2022-42916
Dashboard / Vulnerabilities / CURL-CVE-2022-42916
Summary: HSTS bypass via IDN
Details: curl's HSTS check could be bypassed to trick it to keep using HTTP. Using its HSTS support, curl can be instructed to use HTTPS directly instead of using an insecure clear-text HTTP step even when HTTP is provided in the URL. This mechanism could be bypassed if the hostname in the given URL 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) `.`. Like this: `http://curl。se。`
References:
Affected packages
Package
Name:
Purl:
Affected ranges
Type: SEMVER
Events:
Introduced- 7.77.0
Fixed -7.86.0
Affected versions
7.85.0
Common Vulnerability Scoring System
Attack Vector
Network
Adjacent
Local
Physical
Privileges Required
None
Low
High
User Interaction
None
Required
Scope
Unchanged
Changed
Confidentiality
None
Low
High
Integrity
None
Low
High
Availability
None
Low
High
