| 제목 | Open Source libgsf <=1.14.53 Integer Overflow -> Heap Overflow (gsf_prop_settings_collect_va) |
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| 설명 | The vulnerability arises from unchecked arithmetic during the dynamic expansion of the parameters array—adding 16 to n_alloced_params near SIZE_MAX can overflow, leading to underallocation and potential out-of-bounds writes to heap memory.
void
gsf_prop_settings_collect_valist (GType object_type,
GsfParam **p_params,
size_t *p_n_params,
const gchar *first_property_name,
va_list var_args)
{
...
size_t n_params = *p_n_params;
size_t n_alloced_params = n_params;
...
while (name) {
...
if (n_params >= n_alloced_params) {
// If n_alloced_params is near SIZE_MAX, adding 16 may overflow.
n_alloced_params += 16;
params = g_renew (GsfParam, params, n_alloced_params); // underallocation as a result fof the arithmetic
}
...
params[n_params].name = name; //the 'write' logic, could attempt to derference an offset that isn't mapped, or write to arbitrary addresses on the heap
...
n_params++; // another incrementation vector that could lead to an overflow in theory
...
}
...
} |
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| 사용자 | ninpwn (UID 82253) |
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| 제출 | 2025. 03. 13. PM 09:21 (1 년도 ago) |
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| 모더레이션 | 2025. 03. 24. PM 01:46 (11 days later) |
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| 상태 | 수락 |
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| VulDB 항목 | 300742 [GNOME libgsf 까지 1.14.53 gsf_prop_settings_collect_va n_alloced_params 메모리 손상] |
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| 포인트들 | 17 |
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