#VU28163 Infinite loop in Unbound - CVE-2020-12663

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Main Vulnerability Database Vulnerabilities #VU28163

#VU28163 Infinite loop in Unbound - CVE-2020-12663

Published: May 21, 2020


Vulnerability identifier: #VU28163
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-12663
CWE-ID: CWE-835
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Unbound
Software vendor:
NLnet Labs

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to infinite loop when parsing DNS responses. A remote attacker can send a specially crafted DNS response to the server, consume all available system resources and cause denial of service conditions.


Remediation

Install updates from vendor's website.

External links