Untrusted pointer dereference in Microsoft Office Excel allows an unauthorized attacker to execute code locally.
Weakness
The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| 365_apps | Microsoft | - (including) | - (including) |
| Excel | Microsoft | 2016 (including) | 2016 (including) |
| Office | Microsoft | 2019 (including) | 2019 (including) |
| Office_long_term_servicing_channel | Microsoft | 2021 (including) | 2021 (including) |
| Office_long_term_servicing_channel | Microsoft | 2024 (including) | 2024 (including) |
| Office_online_server | Microsoft | * | 16.0.10417.20075 (excluding) |
Extended Description
An attacker can supply a pointer for memory locations that the product is not expecting. If the pointer is dereferenced for a write operation, the attack might allow modification of critical state variables, cause a crash, or execute code. If the dereferencing operation is for a read, then the attack might allow reading of sensitive data, cause a crash, or set a variable to an unexpected value (since the value will be read from an unexpected memory location). There are several variants of this weakness, including but not necessarily limited to: