CURL-CVE-2022-42916

Source
https://curl.se/docs/CVE-2022-42916.html
Import Source
https://curl.se/docs/CURL-CVE-2022-42916.json
JSON Data
https://api.osv.dev/v1/vulns/CURL-CVE-2022-42916
Aliases
Published
2022-10-26T08:00:00Z
Modified
2024-09-11T06:12:50.004247Z
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
Credits
    • Hiroki Kurosawa - FINDER
    • Daniel Stenberg - REMEDIATION_DEVELOPER

Affected packages

Git / github.com/curl/curl.git

Affected ranges

Type
SEMVER
Events
Introduced
7.77.0
Fixed
7.86.0
Type
GIT
Repo
https://github.com/curl/curl.git
Events

Affected versions

7.*

7.77.0
7.78.0
7.79.0
7.79.1
7.80.0
7.81.0
7.82.0
7.83.0
7.83.1
7.84.0
7.85.0