Carnegie

A security flaw has been discovered in mz-automation libiec61850 up to 1.6.1. This vulnerability affects the function Reporting RCBWriteAccessHandler of the file src/iec61850/server/mms mapping/reporting.c of the component Report Sending Path Handler. The manipulation results in free of memory not on the heap. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 1.6.2 is able to resolve this issue. The patch is identified as 5b2a69f44256b8548927d8afdd7ac5f5381abe1e. It is suggested to upgrade the affected component. The vendor was contacted early about this disclosure.

A weakness has been identified in mz-automation libiec61850 up to 1.6.1. This issue affects the function checkDataSetAccess of the file src/iec61850/server/mms mapping/mms mapping.c of the component MMS Request Handler. This manipulation causes out-of-bounds read. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 1.6.2 is capable of addressing this issue. Patch name: 062062daf4cb50c7aa76e01d6fb4d58fc9278a7d. Upgrading the affected component is recommended. The vendor was contacted early about this disclosure.

**Name of the Vulnerable Software and Affected Versions** liftoff-sr CIPster versions up to e8e9dba09bf56962807d3504b783ccdb6287f3e4 **Description** An out-of-bounds write can occur within the `BufWriter::append()` function of the EtherNet IP Message Handler component. This issue allows for remote exploitation through manipulation of the affected function. **Recommendations** Deploy patch 3a0159ed43125dcd024a1965f0289cb186bae9ff. As a temporary mitigation, restrict access to the `BufWriter::append()` function.