Risk | Medium |
Patch available | NO |
Number of vulnerabilities | 2 |
CVE-ID | CVE-2022-33993 CVE-2022-33992 |
CWE-ID | CWE-20 CWE-16 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software |
Domain Name Relay Daemon Server applications / DNS servers |
Vendor | DNRD |
Security Bulletin
This security bulletin contains information about 2 vulnerabilities.
EUVDB-ID: #VU66540
Risk: Medium
CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-33993
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform DNS cache poisoning attacks.
The vulnerability exists due to insufficient validation of special domain name characters. A remote attacker can send specially crafted input to the server and perform DNS cache poisoning attacks.
MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsDomain Name Relay Daemon: 2.5 - 2.20.3
CPE2.3http://www.usenix.org/conference/usenixsecurity22/presentation/jeitner
http://www.openwall.com/lists/oss-security/2022/08/14/1
http://www.usenix.org/conference/usenixsecurity21/presentation/jeitner
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 application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU66541
Risk: Medium
CVSSv4.0: [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2022-33992
CWE-ID:
CWE-16 - Configuration
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to DNRD forwards and caches DNS queries with the CD (aka checking disabled) bit set to 1, which in turn disables DNSSEC protection provided by upstream resolvers and allows to perform DNS cache poisoning. MitigationCybersecurity Help is currently unaware of any official solution to address this vulnerability.
Vulnerable software versionsDomain Name Relay Daemon: 2.5 - 2.20.3
CPE2.3http://www.usenix.org/conference/usenixsecurity22/presentation/jeitner
http://www.openwall.com/lists/oss-security/2022/08/14/1
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 application in order to exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.