Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2020-27717 |
CWE-ID | CWE-20 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
BIG-IP DNS Hardware solutions / Routers & switches, VoIP, GSM, etc |
Vendor | F5 Networks |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU49070
Risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-27717
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
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 when processing DNS traffic. A remote attacker can pass specially crafted DNS requests to the system and perform a denial of service (DoS) attack.
The affected BIG-IP system temporarily fails to process traffic as it recovers from a Traffic Management Microkernel (TMM) restart, and devices configured in a device group may fail over.
MitigationInstall updates from vendor's website.
Vulnerable software versionsBIG-IP DNS: 11.6.1 - 16.0.0
External linkshttp://support.f5.com/csp/article/K43850230
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.