Description (CNA)
libIEC61850 is an open-source implementation of IEC 61850 client and server protocols including MMS, GOOSE, Sampled Values, and R-Session. Prior to 1.6.2, Reporting_RCBWriteAccessHandler accepts an RptID longer than 129 bytes in the report-control-block write path. When GI later causes sendNextReportEntrySegment to serialize the report, the function wraps rptIdBuf[130] as a temporary MmsValue and passes it to MmsValue_setVisibleString. The setter's resize path frees the stack-backed buffer, allowing a remote client to trigger an invalid free and server crash by writing the oversized RptID and then generating a report. This issue is fixed in version 1.6.2.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| mz-automation / libiec61850 | affected < 1.6.2 |
CWE
CWE-590, CWE-664, CWE-763
References
- https://github.com/mz-automation/libiec61850/security/advisories/GHSA-7qg8-hm25-rv5v
- https://github.com/mz-automation/libiec61850/commit/5b2a69f44256b8548927d8afdd7ac5f5381abe1e
- https://github.com/mz-automation/libiec61850/releases/tag/v1.6.2
ADP enrichment
No English description supplied.