7375f9916a
CVE-2024-47543, CVE-2024-47544, CVE-2024-47545, CVE-2024-47546, CVE-2024-47596, CVE-2024-47597, CVE-2024-47598, CVE-2024-47599, CVE-2024-47601, CVE-2024-47602, CVE-2024-47603, CVE-2024-47606, CVE-2024-47613, CVE-2024-47774, CVE-2024-47775, CVE-2024-47776, CVE-2024-47777, CVE-2024-47778, CVE-2024-47834 Resolves: RHEL-70958, RHEL-70971, RHEL-71033, RHEL-71195 Resolves: RHEL-71210, RHEL-71202, RHEL-71171, RHEL-71200 Resolves: RHEL-71206, RHEL-71173, RHEL-71198, RHEL-71204 Resolves: RHEL-71208, RHEL-71031, RHEL-71007, RHEL-71039 Resolves: RHEL-71169, RHEL-71192, RHEL-71161, RHEL-71167 Resolves: RHEL-71189
60 lines
2.1 KiB
Diff
60 lines
2.1 KiB
Diff
From 721a573ff7819c5f15688c4226d87e1d60379508 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
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Date: Fri, 27 Sep 2024 15:50:54 +0300
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Subject: [PATCH 19/28] qtdemux: Check sizes of stsc/stco/stts before trying to
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merge entries
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Thanks to Antonio Morales for finding and reporting the issue.
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Fixes GHSL-2024-246
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Fixes https://gitlab.freedesktop.org/gstreamer/gstreamer/-/issues/3854
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Part-of: <https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/8059>
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---
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.../gst-plugins-good/gst/isomp4/qtdemux.c | 22 +++++++++++++++++++
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1 file changed, 22 insertions(+)
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diff --git a/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c b/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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index 2406098062..0b86cfd86c 100644
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--- a/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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+++ b/subprojects/gst-plugins-good/gst/isomp4/qtdemux.c
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@@ -9475,6 +9475,21 @@ qtdemux_merge_sample_table (GstQTDemux * qtdemux, QtDemuxStream * stream)
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return;
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}
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+ if (gst_byte_reader_get_remaining (&stream->stts) < 8) {
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+ GST_DEBUG_OBJECT (qtdemux, "Too small stts");
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+ return;
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+ }
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+
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+ if (stream->stco.size < 8) {
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+ GST_DEBUG_OBJECT (qtdemux, "Too small stco");
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+ return;
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+ }
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+
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+ if (stream->n_samples_per_chunk == 0) {
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+ GST_DEBUG_OBJECT (qtdemux, "No samples per chunk");
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+ return;
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+ }
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+
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/* Parse the stts to get the sample duration and number of samples */
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gst_byte_reader_skip_unchecked (&stream->stts, 4);
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stts_duration = gst_byte_reader_get_uint32_be_unchecked (&stream->stts);
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@@ -9486,6 +9501,13 @@ qtdemux_merge_sample_table (GstQTDemux * qtdemux, QtDemuxStream * stream)
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GST_DEBUG_OBJECT (qtdemux, "sample_duration %d, num_chunks %u", stts_duration,
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num_chunks);
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+ if (gst_byte_reader_get_remaining (&stream->stsc) <
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+ stream->n_samples_per_chunk * 3 * 4 +
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+ (stream->n_samples_per_chunk - 1) * 4) {
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+ GST_DEBUG_OBJECT (qtdemux, "Too small stsc");
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+ return;
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+ }
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+
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/* Now parse stsc, convert chunks into single samples and generate a
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* new stsc, stts and stsz from this information */
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gst_byte_writer_init (&stsc);
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--
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2.47.0
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