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34 lines
1.2 KiB
Diff
34 lines
1.2 KiB
Diff
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Prevent buffer overflow when reading large messages.
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https://bugzilla.redhat.com/show_bug.cgi?id=1401603
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https://access.redhat.com/security/cve/CVE-2016-9577
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-9577
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https://security-tracker.debian.org/tracker/CVE-2016-9577
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Patch copied from upstream source repository:
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https://cgit.freedesktop.org/spice/spice/commit/?h=0.12&id=5f96b596353d73bdf4bb3cd2de61e48a7fd5b4c3
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From 5f96b596353d73bdf4bb3cd2de61e48a7fd5b4c3 Mon Sep 17 00:00:00 2001
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From: Frediano Ziglio <fziglio@redhat.com>
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Date: Tue, 29 Nov 2016 16:46:56 +0000
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Subject: main-channel: Prevent overflow reading messages from client
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diff --git a/server/main_channel.c b/server/main_channel.c
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index 0ecc9df..1fc3915 100644
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--- a/server/main_channel.c
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+++ b/server/main_channel.c
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@@ -1026,6 +1026,9 @@ static uint8_t *main_channel_alloc_msg_rcv_buf(RedChannelClient *rcc,
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if (type == SPICE_MSGC_MAIN_AGENT_DATA) {
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return reds_get_agent_data_buffer(mcc, size);
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+ } else if (size > sizeof(main_chan->recv_buf)) {
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+ /* message too large, caller will log a message and close the connection */
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+ return NULL;
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} else {
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return main_chan->recv_buf;
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}
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--
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cgit v0.10.2
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