Headline

CVE-2020-20221: Two vulnerabilities found in MikroTik's RouterOS

Mikrotik RouterOs before 6.44.6 (long-term tree) suffers from an uncontrolled resource consumption vulnerability in the /nova/bin/cerm process. An authenticated remote attacker can cause a Denial of Service due to overloading the systems CPU.

3 years ago

CVE

Open in Source

#vulnerability #web #dos #acer #auth

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From: Q C <cq674350529 () gmail com>
Date: Sun, 10 May 2020 10:41:32 +0800

Advisory: two vulnerabilities found in MikroTik’s RouterOS

Details

Product: MikroTik’s RouterOS Affected Versions: until stable 6.45.7 (first vulnerability), until stable 6.46.4 (second vulnerability) Fixed Versions: stable 6.46.x (first vulnerability), stable 6.46.5 (second vulnerability) Vendor URL: https://mikrotik.com/ Vendor Status: fixed version released CVE: - Credit: Qian Chen(@cq674350529) of Qihoo 360 Nirvan Team

Product Description

RouterOS is the operating system used on the MikroTik’s devices, such as switch, router and access point.

Description of vulnerabilities

These two vulnerabilities were tested only against the MikroTik RouterOS stable release tree when found. Maybe other release trees also suffer from these vulnerabilities.

The cerm process suffers from an uncontrolled resource consumption issue. By sending a crafted packet, an authenticated remote user can cause a high cpu load, which may make the device respond slowly or unable to respond.
The traceroute process suffers from a memory corruption issue. By sending a crafted packet, an authenticated remote user can crash the traceroute process due to invalid memory access.

Solution

Upgrade to the corresponding latest RouterOS tree version.

References

[1] https://mikrotik.com/download/changelogs/stable-release-tree

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