Описание
GStreamer is a library for constructing graphs of media-handling components. An integer underflow has been detected in the function qtdemux_parse_theora_extension within qtdemux.c. The vulnerability occurs due to an underflow of the gint size variable, which causes size to hold a large unintended value when cast to an unsigned integer. This 32-bit negative value is then cast to a 64-bit unsigned integer (0xfffffffffffffffa) in a subsequent call to gst_buffer_new_and_alloc. The function gst_buffer_new_allocate then attempts to allocate memory, eventually calling _sysmem_new_block. The function _sysmem_new_block adds alignment and header size to the (unsigned) size, causing the overflow of the 'slice_size' variable. As a result, only 0x89 bytes are allocated, despite the large input size. When the following memcpy call occurs in gst_buffer_fill, the data from the input file will overwrite the content of the GstMapInfo info structure. Finally, during the call to gst_memory_unmap, the overwritten memory may cause a function pointer hijack, as the mem->allocator->mem_unmap_full function is called with a corrupted pointer. This function pointer overwrite could allow an attacker to alter the execution flow of the program, leading to arbitrary code execution. This vulnerability is fixed in 1.24.10.
A flaw was found in the MP4/MOV demuxer and memory allocator in the GStreamer library. Processing a specially crafted input file can cause an integer overflow in the qtdemux_parse_theora_extension function. This issue leads to a small amount of memory being allocated to store a large input size, resulting in an out-of-bounds write.
Отчет
To exploit this flaw, an attacker needs to trick a user into opening or processing a specially crafted .mov file. However, this issue still has an Important severity as it allows an attacker to trigger an out-of-bounds write to memory allocated in the heap, overwriting critical memory regions, potentially resulting in unexpected behavior, including arbitrary code execution.
Меры по смягчению последствий
Do not process untrusted files with the MP4/MOV demuxer and monitor application crashes as this may indicate exploitation attempts.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | gstreamer1-plugins-good | Affected | ||
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | gstreamer1-plugins-base | Fixed | RHSA-2024:11344 | 18.12.2024 |
| Red Hat Enterprise Linux 7 Extended Lifecycle Support | gstreamer1-plugins-good | Fixed | RHSA-2024:11344 | 18.12.2024 |
| Red Hat Enterprise Linux 8 | gstreamer1-plugins-good | Fixed | RHSA-2024:11299 | 17.12.2024 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | gstreamer1-plugins-good | Fixed | RHSA-2024:11148 | 18.12.2024 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | gstreamer1-plugins-good | Fixed | RHSA-2024:11346 | 18.12.2024 |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service | gstreamer1-plugins-good | Fixed | RHSA-2024:11346 | 18.12.2024 |
| Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | gstreamer1-plugins-good | Fixed | RHSA-2024:11346 | 18.12.2024 |
| Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support | gstreamer1-plugins-good | Fixed | RHSA-2024:11149 | 18.12.2024 |
| Red Hat Enterprise Linux 8.6 Telecommunications Update Service | gstreamer1-plugins-good | Fixed | RHSA-2024:11149 | 18.12.2024 |
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Дополнительная информация
Статус:
8.8 High
CVSS3
Связанные уязвимости
GStreamer is a library for constructing graphs of media-handling components. An integer underflow has been detected in the function qtdemux_parse_theora_extension within qtdemux.c. The vulnerability occurs due to an underflow of the gint size variable, which causes size to hold a large unintended value when cast to an unsigned integer. This 32-bit negative value is then cast to a 64-bit unsigned integer (0xfffffffffffffffa) in a subsequent call to gst_buffer_new_and_alloc. The function gst_buffer_new_allocate then attempts to allocate memory, eventually calling _sysmem_new_block. The function _sysmem_new_block adds alignment and header size to the (unsigned) size, causing the overflow of the 'slice_size' variable. As a result, only 0x89 bytes are allocated, despite the large input size. When the following memcpy call occurs in gst_buffer_fill, the data from the input file will overwrite the content of the GstMapInfo info structure. Finally, during the call to gst_memory_unmap, the o...
GStreamer is a library for constructing graphs of media-handling components. An integer underflow has been detected in the function qtdemux_parse_theora_extension within qtdemux.c. The vulnerability occurs due to an underflow of the gint size variable, which causes size to hold a large unintended value when cast to an unsigned integer. This 32-bit negative value is then cast to a 64-bit unsigned integer (0xfffffffffffffffa) in a subsequent call to gst_buffer_new_and_alloc. The function gst_buffer_new_allocate then attempts to allocate memory, eventually calling _sysmem_new_block. The function _sysmem_new_block adds alignment and header size to the (unsigned) size, causing the overflow of the 'slice_size' variable. As a result, only 0x89 bytes are allocated, despite the large input size. When the following memcpy call occurs in gst_buffer_fill, the data from the input file will overwrite the content of the GstMapInfo info structure. Finally, during the call to gst_memory_unmap, the over
GStreamer is a library for constructing graphs of media-handling compo ...
8.8 High
CVSS3