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37 lines
1.2 KiB
37 lines
1.2 KiB
From fbe394e9166ddfe847dcac0eab0fcbd3c225dc33 Mon Sep 17 00:00:00 2001
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From: David Tardon <dtardon@redhat.com>
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Date: Wed, 10 Oct 2018 09:33:28 +0200
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Subject: [PATCH] firewall-util: add an assert that we're not overwriting a
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buffer
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... like commit f28501279d2c28fdbb31d8273b723e9bf71d3b98 does for
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out_interface.
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(cherry picked from commit 0b777d20e9a3868b12372ffce8040d1be063cec7)
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Resolves: #1602706
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---
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src/shared/firewall-util.c | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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diff --git a/src/shared/firewall-util.c b/src/shared/firewall-util.c
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index eb4f5ff616..cba52fb419 100644
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--- a/src/shared/firewall-util.c
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+++ b/src/shared/firewall-util.c
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@@ -50,8 +50,14 @@ static int entry_fill_basics(
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entry->ip.proto = protocol;
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if (in_interface) {
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+ size_t l;
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+
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+ l = strlen(in_interface);
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+ assert(l < sizeof entry->ip.iniface);
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+ assert(l < sizeof entry->ip.iniface_mask);
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+
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strcpy(entry->ip.iniface, in_interface);
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- memset(entry->ip.iniface_mask, 0xFF, strlen(in_interface)+1);
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+ memset(entry->ip.iniface_mask, 0xFF, l + 1);
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}
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if (source) {
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entry->ip.src = source->in;
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