Array Index Error in MikroTik RouterOS Affects SMB Server Functionality
CVE-2020-11881

7.5HIGH

Key Information:

Vendor

Mikrotik

Status
Routeros
Vendor
CVE Published:
14 September 2020

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 21%

What is CVE-2020-11881?

An array index error present in MikroTik RouterOS versions 6.41.3 to 6.46.5, as well as 7.x up to 7.0 Beta5, exposes the SMB server to potential crashes. This vulnerability enables unauthenticated remote attackers to disrupt the SMB server's functionality by sending specially crafted setup-request packets.

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-11881
Created by botlabsDev

References

https://mikrotik.com
x_refsource_MISC
https://github.com/botlabsDev/CVE-2020-11881
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EPSS Score

21% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability Reserved

.