Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2021-36754 |
CWE-ID | CWE-125 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
PowerDNS Authoritative Server applications / DNS servers |
Vendor | PowerDNS.COM B.V. |
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU55314
Risk: Medium
CVSSv3.1:
CVE-ID: CVE-2021-36754
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when processing DNS queries. A remote attacker can send a specially crafted query with QTYPE 65535, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.
Install updates from vendor's website.
Vulnerable software versionsPowerDNS Authoritative: 4.5.0
http://docs.powerdns.com/authoritative/security-advisories/powerdns-advisory-2021-01.html
Can this vulnerability be exploited remotely?
How the attacker can exploit this vulnerability?
Is there known malware, which exploits this vulnerability?