MikroTik RouterOS up to 6.41.2/6.42rc26 SMB memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.00

A vulnerability classified as critical has been found in MikroTik RouterOS up to 6.41.2/6.42rc26 (Router Operating System). This affects an unknown functionality of the component SMB. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability.

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 confirmed mailinglist post (Full-Disclosure). It is possible to read the advisory at seclists.org. The vendor cooperated in the coordination of the public release. This vulnerability is uniquely identified as CVE-2018-7445 since 02/23/2018. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

After immediately, there has been an exploit disclosed. The exploit is shared for download at seclists.org. It is declared as highly functional. 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. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 13147 (MikroTik RouterOS Stack-based Buffer Overflow Vulnerability). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 09/08/2022 with a due date of 09/29/2022:

Apply updates per vendor instructions.

Upgrading to version 6.41.3 or 6.42rc27 eliminates this vulnerability. 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 in the databases at Tenable (108521) and Exploit-DB (44290).

Productinfo

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
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CVSSv2info

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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Download: 🔍

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Nessus ID: 108521
Nessus Name: MikroTik RouterOS < 6.40.7 or 6.41.x < 6.41.3 SMB Buffer Overflow
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Saint ID: microtik_routeros_smb_bo
Saint Name: MicroTik RouterOS SMB buffer overflow

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Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Upgrade: RouterOS 6.41.3/6.42rc27

Snort ID: 46076
Snort Message: NETBIOS MikroTik RouterOS buffer overflow attempt
Snort Class: 🔍

Timelineinfo

02/23/2018 🔍
03/15/2018 +20 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/15/2018 +0 days 🔍
03/19/2018 +4 days 🔍
03/19/2018 +0 days 🔍
03/22/2018 +3 days 🔍
04/27/2024 +2228 days 🔍

Sourcesinfo

Advisory: [CORE-2018-0003] MikroTik RouterOS SMB Buffer Overflow
Organization: Core Security
Status: Confirmed
Coordinated: 🔍

CVE: CVE-2018-7445 (🔍)
SecurityFocus: 103427 - MikroTik RouterOS CVE-2018-7445 Buffer Overflow Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 03/19/2018 08:03
Updated: 04/27/2024 15:54
Changes: 03/19/2018 08:03 (87), 01/14/2020 17:28 (4), 02/05/2021 13:12 (2), 04/27/2024 15:54 (29)
Complete: 🔍
Cache ID: 3:1BF

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