A vulnerability was found in MicroPython up to 1.21.0. It has been classified as critical. Affected is the function slice_indices of the file objslice.c. The manipulation leads to heap-based buffer overflow. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 1.22.0 is able to address this issue. It is recommended to upgrade the affected component. The identifier of this vulnerability is VDB-249180.
A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
The product writes data past the end, or before the beginning, of the intended buffer.
| Link | Tags |
|---|---|
| https://vuldb.com/?id.249180 | third party advisory vdb entry technical description |
| https://vuldb.com/?ctiid.249180 | signature third party advisory permissions required |
| https://github.com/micropython/micropython/issues/13007 | issue tracking exploit |
| https://github.com/micropython/micropython/pull/13039 | issue tracking |
| https://github.com/micropython/micropython/pull/13039/commits/f397a3ec318f3ad05aa287764ae7cef32202380f | patch issue tracking |
| https://github.com/micropython/micropython/releases/tag/v1.22.0 | patch release notes |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TEK46QAJOXXDZOWOIE2YACUOCZFWOBCK/ | |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4E2HYWCZB5R4SHY4SZZZSFDMD64N4SOZ/ | |
| https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/D3WWY5JY4RTJE25APB4REGDUDPATG6H7/ |