https://src.fedoraproject.org/rpms/sylpheed/blob/rawhide/f/sylpheed-3.7.0-uri-check.patch From 4d7dfe055673b49391af66f45643bc956799a4ca Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Dan=20Hor=C3=A1k?= Date: Mon, 2 Aug 2021 12:04:42 +0200 Subject: [PATCH] harden link checker before accepting click http://git.claws-mail.org/?p=claws.git;a=commitdiff_plain;h=ac286a71ed78429e16c612161251b9ea90ccd431;hp=a4a629ce824011f5ae3f0b8cb1117f9608b7f5ad Resolves: CVE-2021-37746 --- src/textview.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/textview.c b/src/textview.c index e55eea9e..6fbb8a1d 100644 --- a/src/textview.c +++ b/src/textview.c @@ -2689,7 +2689,7 @@ static gboolean textview_uri_security_check(TextView *textview, RemoteURI *uri) gboolean retval = TRUE; if (is_uri_string(uri->uri) == FALSE) - return TRUE; + return FALSE; buffer = gtk_text_view_get_buffer(GTK_TEXT_VIEW(textview->text)); gtk_text_buffer_get_iter_at_offset(buffer, &start_iter, uri->start); @@ -2725,6 +2725,8 @@ static gboolean textview_uri_security_check(TextView *textview, RemoteURI *uri) if (aval == G_ALERTDEFAULT) retval = TRUE; } + if (strlen(uri->uri) > get_uri_len(uri->uri)) + retval = FALSE; g_free(visible_str); -- 2.31.1