open62541 1.5.0 before 1.5.7 contains an integer overflow in UA_DataType_fromStructureDescription() that wraps the 16-bit memSize field for large custom structure definitions. A malicious OPC UA server can supply DataType definitions via UA_Client_getRemoteDataTypes(), causing decodeBinaryStructure() to overflow the heap, crashing clients or enabling code execution.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Open62541 Open62541
cpe:2.3:a:open62541:open62541:*:*:*:*:*:*:*:*
|
1.5.0
|
1.5.7
|
References 6
https://github.com/open62541/open62541/commit/0cf4806768c493bc6ccffcd4419da2415…
NVD
https://github.com/open62541/open62541/pull/8298
NVD
https://github.com/open62541/open62541/pull/8302
NVD
https://github.com/open62541/open62541/blob/v1.5.6/src/ua_types_definition.c#L2…
NVD
https://github.com/open62541/open62541/releases/tag/v1.5.7
open62541 v1.5.7 Release Notes
https://www.vulncheck.com/advisories/open62541-1.5.0-before-1.5.7-integer-overf…
VulnCheck Advisory: open62541 1.5.0 before 1.5.7 Integer Overflow Heap Buffer Overflow via Custom DataType