PT-2021-10441 · Mikrotik · Mikrotik Routeros

Qian Chen · Published 2021-07-07 · Updated 2022-11-07 · CVE-2020-20213

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions: Mikrotik RouterOs version 6.44.5

Description: The issue is related to a stack exhaustion vulnerability in the /nova/bin/net process. An authenticated remote attacker can cause a Denial of Service due to overloading the system's CPU.

Recommendations: For Mikrotik RouterOs version 6.44.5, consider restricting access to the /nova/bin/net process to minimize the risk of exploitation. As a temporary workaround, limit the CPU usage of the process until a patch is available. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Uncontrolled Recursion

Weakness Enumeration

CWE-674

Related Identifiers

CVE-2020-20213

Affected Products

Mikrotik Routeros

References · 6

• https://mikrotik.com · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-20213 · Security Note
• https://osv.dev/vulnerability/CVE-2020-20213 · Vendor Advisory
• https://cwe.mitre.org/data/definitions/674.html · Note
• http://seclists.org/fulldisclosure/2021/May/10 · Note
• https://t.me/cvenotify/17247 · Telegram Post