From: Fabian Keil <fk@fabiankeil.de>
Date: Sun, 4 May 2025 13:08:58 +0000 (+0200)
Subject: parse_http_url(): Fail if no host is found when we expected one
X-Git-Url: http://www.privoxy.org/gitweb/%22https:/@default-cgi@/static/@default-cgi@edit-actions?a=commitdiff_plain;h=b8f5ec4d1a5eee00548fded12aba5b8d229a7bfb;p=privoxy.git

parse_http_url(): Fail if no host is found when we expected one

This can happen in case of invalid requests in which case
Privoxy priviously would leak a couple of bytes of memory.
---

diff --git a/urlmatch.c b/urlmatch.c
index b6a61d96..b213c3eb 100644
--- a/urlmatch.c
+++ b/urlmatch.c
@@ -326,6 +326,11 @@ jb_err parse_http_url(const char *url, struct http_request *http, int require_pr
 
    if (!host_available)
    {
+      if (!require_protocol)
+      {
+         log_error(LOG_LEVEL_ERROR, "No host found in request line.");
+         return JB_ERR_PARSE;
+      }
       /* Without host, there is nothing left to do here */
       return JB_ERR_OK;
    }