SB2020052013 - Denial of service in Windows DNS Server
Published: May 20, 2020
Security Bulletin ID
SB2020052013
Severity
Medium
Patch available
NO
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Input validation error (CVE-ID: N/A)
The 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 requests. While resolving a name from the attacker client, for each referral record found, the resolver contacts the victim domain. This action can generate a large number of communications between the recursive resolver and the victim's authoritative DNS server to cause a Distributed Denial of Service (DDoS) attack.
Remediation
Cybersecurity Help is not aware of any official remediation provided by the vendor.