CVE-2020-20253: Divide by Zero
First published: Tue May 18 2021(Updated: )
Mikrotik RouterOs before 6.47 (stable tree) suffers from a divison by zero vulnerability in the /nova/bin/lcdstat process. An authenticated remote attacker can cause a Denial of Service due to a divide by zero error.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| MikroTik RouterOS | <6.47 |
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Reference Links
Frequently Asked Questions
What is CVE-2020-20253?
CVE-2020-20253 is a vulnerability in Mikrotik RouterOs before 6.47 (stable tree) that allows an authenticated remote attacker to cause a Denial of Service by exploiting a divide by zero error.
What is the severity of CVE-2020-20253?
The severity of CVE-2020-20253 is medium with a CVSSv3 score of 6.5.
How does CVE-2020-20253 affect Mikrotik RouterOs?
CVE-2020-20253 affects Mikrotik RouterOs versions before 6.47 (stable tree) by causing a Denial of Service due to a divide by zero error in the /nova/bin/lcdstat process.
How can an attacker exploit CVE-2020-20253?
An attacker can exploit CVE-2020-20253 by authenticating remotely and triggering a divide by zero error in the /nova/bin/lcdstat process, leading to a Denial of Service.
Is there a fix available for CVE-2020-20253?
Yes, updating Mikrotik RouterOs to version 6.47 (stable tree) or newer resolves the vulnerability.
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