Security Advisory

CVE-2022-27779

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2022-06-01 00:00:00

Last updated 2024-08-03 05:33:00

Assigner hackerone

State PUBLISHED

Description

libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curls "cookie engine" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain.

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