CVE-2022-42916

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.

References

https://support.apple.com/kb/HT213605

https://support.apple.com/kb/HT213604

https://security.netapp.com/advisory/ntap-20221209-0010/

https://security.gentoo.org/glsa/202212-01

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Q27V5YYMXUVI6PRZQVECON32XPVWTKDK/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HVU3IMZCKR4VE6KJ4GCWRL2ILLC6OV76/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/37YEVVC6NAF6H7UHH6YAUY5QEVY6LIH2/

https://curl.se/docs/CVE-2022-42916.html

http://www.openwall.com/lists/oss-security/2022/12/21/1

http://seclists.org/fulldisclosure/2023/Jan/20

http://seclists.org/fulldisclosure/2023/Jan/19

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3