72 lines
2.4 KiB
Diff
72 lines
2.4 KiB
Diff
Fix CVE-2016-7613 (Integer overflow in opj_pi_create_decode allowing execution
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of arbitrary code):
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https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-7163
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https://github.com/uclouvain/openjpeg/issues/826
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http://seclists.org/oss-sec/2016/q3/442
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Copied from upstream repository:
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https://github.com/uclouvain/openjpeg/commit/c16bc057ba3f125051c9966cf1f5b68a05681de4
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https://github.com/uclouvain/openjpeg/commit/ef01f18dfc6780b776d0674ed3e7415c6ef54d24
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From c16bc057ba3f125051c9966cf1f5b68a05681de4 Mon Sep 17 00:00:00 2001
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From: trylab <trylab@users.noreply.github.com>
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Date: Tue, 6 Sep 2016 13:55:49 +0800
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Subject: [PATCH] Fix an integer overflow issue (#809)
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Prevent an integer overflow issue in function opj_pi_create_decode of
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pi.c.
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---
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src/lib/openjp2/pi.c | 8 +++++++-
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1 file changed, 7 insertions(+), 1 deletion(-)
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diff --git a/src/lib/openjp2/pi.c b/src/lib/openjp2/pi.c
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index cffad66..36e2ff0 100644
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--- a/src/lib/openjp2/pi.c
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+++ b/src/lib/openjp2/pi.c
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@@ -1237,7 +1237,13 @@ opj_pi_iterator_t *opj_pi_create_decode(opj_image_t *p_image,
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l_current_pi = l_pi;
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/* memory allocation for include */
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- l_current_pi->include = (OPJ_INT16*) opj_calloc((l_tcp->numlayers +1) * l_step_l, sizeof(OPJ_INT16));
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+ /* prevent an integer overflow issue */
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+ l_current_pi->include = 00;
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+ if (l_step_l <= (SIZE_MAX / (l_tcp->numlayers + 1U)))
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+ {
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+ l_current_pi->include = (OPJ_INT16*) opj_calloc((l_tcp->numlayers +1) * l_step_l, sizeof(OPJ_INT16));
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+ }
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+
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if
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(!l_current_pi->include)
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{
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--
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2.10.0
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From ef01f18dfc6780b776d0674ed3e7415c6ef54d24 Mon Sep 17 00:00:00 2001
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From: Matthieu Darbois <mayeut@users.noreply.github.com>
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Date: Thu, 8 Sep 2016 07:34:46 +0200
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Subject: [PATCH] Cast to size_t before multiplication
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Need to cast to size_t before multiplication otherwise overflow check is useless.
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---
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src/lib/openjp2/pi.c | 2 +-
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1 file changed, 1 insertion(+), 1 deletion(-)
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diff --git a/src/lib/openjp2/pi.c b/src/lib/openjp2/pi.c
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index 36e2ff0..809b33d 100644
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--- a/src/lib/openjp2/pi.c
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+++ b/src/lib/openjp2/pi.c
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@@ -1241,7 +1241,7 @@ opj_pi_iterator_t *opj_pi_create_decode(opj_image_t *p_image,
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l_current_pi->include = 00;
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if (l_step_l <= (SIZE_MAX / (l_tcp->numlayers + 1U)))
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{
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- l_current_pi->include = (OPJ_INT16*) opj_calloc((l_tcp->numlayers +1) * l_step_l, sizeof(OPJ_INT16));
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+ l_current_pi->include = (OPJ_INT16*) opj_calloc((size_t)(l_tcp->numlayers + 1U) * l_step_l, sizeof(OPJ_INT16));
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}
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if
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--
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2.10.0
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