MikroTik RouterOS up to 6.41.2/6.42rc26 SMB memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.7$0-$5k0.04

Overview

A vulnerability classified as critical has been found in MikroTik RouterOS up to 6.41.2/6.42rc26. This affects an unknown part of the component SMB. The manipulation leads to memory corruption. The CWE definition for the vulnerability is CWE-119. The bug was discovered 03/15/2018. The weakness was shared 03/15/2018 with Core Security as [CORE-2018-0003] MikroTik RouterOS SMB Buffer Overflow as Mailinglist Post (Full-Disclosure). It is possible to read the advisory at seclists.org. The public release was coordinated in cooperation with the vendor. This vulnerability is uniquely identified as CVE-2018-7445. It is possible to initiate the attack remotely. There are no technical details available. Furthermore, there is an exploit available. The exploit has been disclosed to the public and may be used. The pricing for an exploit might be around USD $0-$5k at the moment. It is declared as proof-of-concept. The exploit is shared for download at seclists.org. We expect the 0-day to have been worth approximately $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 108521 (MikroTik RouterOS < 6.40.7 or 6.41.x < 6.41.3 SMB Buffer Overflow), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13147 (MikroTik RouterOS Stack-based Buffer Overflow Vulnerability). Upgrading to version 6.41.3 and 6.42rc27 is able to address this issue. It is recommended to upgrade the affected component. A possible mitigation has been published immediately after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 46076. The vulnerability is also documented other vulnerability databases: SecurityFocus (BID 103427) and Tenable (108521). [Details]

Activities

Activities

IOC - Indicator of Compromise (5)

These indicators of compromise highlight associated network ranges which are known to be part of research and attack activities.

IDIP rangeActorTypeConfidence
15.8.71.0/24PingPullpredictiveHigh
2xx.xxx.xxx.xXxxxxxxxpredictiveHigh
3xx.xx.xxx.xXxxxxxxxpredictiveHigh
4xxx.xx.xx.xXxxxxxxxpredictiveHigh
5xxx.xxx.xx.xXxxxxxxxpredictiveHigh

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