CVE-2022-43551

المصدر الرسمي: NVD

العودة للثغرات المصدر الرسمي

مستوى الخطورة

عالية (High)

درجة CVSS

7.5

حالة الاستغلال KEV

غير مدرجة حاليًا

تاريخ النشر

2022-12-23

وصف الثغرة

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.

الأثر المحتمل

لم تتوفر تفاصيل إضافية في المصدر الرسمي.

التوصيات والمعالجة

لم تتوفر تفاصيل إضافية في المصدر الرسمي.\nراجع روابط المصدر الرسمية.

حالة الاستغلال (KEV)

لا يوجد إدراج حاليًا في قائمة KEV.

المراجع الرسمية

English Technical Fields

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.

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N