package/tinyproxy: fix CVE-2022-40468

Tinyproxy commit 84f203f and earlier does not process HTTP request lines
in the process_request() function and is using uninitialized buffers.
This vulnerability allows attackers to access sensitive information at
system runtime.

Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
(cherry picked from commit eedd93f010)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/tinyproxy/0001-prevent-junk-from-showing-up-in-error-page-in-invalid-requests.patch

@@ -0,0 +1,32 @@
+From 3764b8551463b900b5b4e3ec0cd9bb9182191cb7 Mon Sep 17 00:00:00 2001
+From: rofl0r <rofl0r@users.noreply.github.com>
+Date: Thu, 8 Sep 2022 15:18:04 +0000
+Subject: [PATCH] prevent junk from showing up in error page in invalid
+ requests
+
+fixes #457
+
+[Retrieved from:
+https://github.com/tinyproxy/tinyproxy/commit/3764b8551463b900b5b4e3ec0cd9bb9182191cb7]
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+---
+ src/reqs.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/src/reqs.c b/src/reqs.c
+index bce69819..45db118d 100644
+--- a/src/reqs.c
++++ b/src/reqs.c
+@@ -343,8 +343,12 @@ static struct request_s *process_request (struct conn_s *connptr,
+                 goto fail;
+         }
+ 
++        /* zero-terminate the strings so they don't contain junk in error page */
++        request->method[0] = url[0] = request->protocol[0] = 0;
++
+         ret = sscanf (connptr->request_line, "%[^ ] %[^ ] %[^ ]",
+                       request->method, url, request->protocol);
++
+         if (ret == 2 && !strcasecmp (request->method, "GET")) {
+                 request->protocol[0] = 0;
+ 

package/tinyproxy/tinyproxy.mk

@@ -11,4 +11,7 @@ TINYPROXY_LICENSE = GPL-2.0+
 TINYPROXY_LICENSE_FILES = COPYING
 TINYPROXY_CPE_ID_VENDOR = tinyproxy_project
 
+# 0001-prevent-junk-from-showing-up-in-error-page-in-invalid-requests.patch
+TINYPROXY_IGNORE_CVES += CVE-2022-40468
+
 $(eval $(autotools-package))