RT-Labs AB C-Open CANopen SDO Server Write Protection Bypass
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
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| RT-Labs AB | C-Open | affected |
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No data.
No data.
| Vendor | Product | Versions | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rt-labs Ab | C-open |
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No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.237% probability within 30 days)
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| Metrics |
ssvc
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| First Time appeared |
Rt-labs Ab
Rt-labs Ab c-open |
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| Vendors & Products |
Rt-labs Ab
Rt-labs Ab c-open |
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| Description | RT-Labs AB C-Open CANopen contains a write protection bypass in the SDO (Service Data Object) server implementation 'src/co_sdo_server.c' that fails to properly validate write permissions when processing download-segment frames. An unauthenticated attacker on the CAN bus can initiate an SDO upload for a read-only Object Dictionary (OD) entry, which sets a data pointer to the read-only object, then send download-segment frames to write to that memory location. The download-segment handler does not verify that a download session is active, allowing any CANopen node to overwrite read-only OD entries using two SDO frames. Note that CANopen protocol operates over CAN bus and does not provide built-in authentication mechanisms. Fixed in 1.1.1. | |
| Title | RT-Labs AB C-Open CANopen SDO Server Write Protection Bypass | |
| Weaknesses | CWE-863 | |
| References |
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| Metrics |
cvssV3_1
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