Denial of service in MikroTik RouterOS
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2019-3924 |
| CWE-ID | CWE-20 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
MikroTik RouterOS Hardware solutions / Routers & switches, VoIP, GSM, etc |
| Vendor | MikroTik |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Input validation error
EUVDB-ID: #VU17851
Risk: Medium
CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2019-3924
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: Yes
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input within the Winbox service. A remote attacker can send a specially crafted request to the affected service and trigger denial of service conditions.
Successful exploitation of the vulnerability requires that the Winbox service is exposed to the attacker.
Install updates from vendor's website.
Vulnerable software versionsMikroTik RouterOS: 6.42 - 6.43.11
External linkshttp://www.tenable.com/security/research/tra-2019-07
http://mikrotik.com/download/changelogs/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
How the attacker can exploit this vulnerability?
The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
