mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-11-16 03:45:24 -05:00
34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
|
Prevent possible DoS during protocol handshake.
|
||
|
|
|
||
|
|
https://bugzilla.redhat.com/show_bug.cgi?id=1399566
|
||
|
|
https://access.redhat.com/security/cve/CVE-2016-9578
|
||
|
|
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9578
|
||
|
|
https://security-tracker.debian.org/tracker/CVE-2016-9578
|
||
|
|
|
||
|
|
Patch copied from upstream source repository:
|
||
|
|
|
||
|
|
https://cgit.freedesktop.org/spice/spice/commit/?h=0.12&id=f66dc643635518e53dfbe5262f814a64eec54e4a
|
||
|
|
|
||
|
|
From 1c6517973095a67c8cb57f3550fc1298404ab556 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Frediano Ziglio <fziglio@redhat.com>
|
||
|
|
Date: Tue, 13 Dec 2016 14:39:48 +0000
|
||
|
|
Subject: Prevent possible DoS attempts during protocol handshake
|
||
|
|
|
||
|
|
diff --git a/server/reds.c b/server/reds.c
|
||
|
|
index f40b65c..86a33d5 100644
|
||
|
|
--- a/server/reds.c
|
||
|
|
+++ b/server/reds.c
|
||
|
|
@@ -2202,7 +2202,8 @@ static void reds_handle_read_header_done(void *opaque)
|
||
|
|
|
||
|
|
reds->peer_minor_version = header->minor_version;
|
||
|
|
|
||
|
|
- if (header->size < sizeof(SpiceLinkMess)) {
|
||
|
|
+ /* the check for 4096 is to avoid clients to cause arbitrary big memory allocations */
|
||
|
|
+ if (header->size < sizeof(SpiceLinkMess) || header->size > 4096) {
|
||
|
|
reds_send_link_error(link, SPICE_LINK_ERR_INVALID_DATA);
|
||
|
|
spice_warning("bad size %u", header->size);
|
||
|
|
reds_link_free(link);
|
||
|
|
--
|
||
|
|
cgit v0.10.2
|
||
|
|
|