Denial of service in XACK DNS
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-5591 |
| CWE-ID | CWE-399 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
XACK DNS Server applications / Other server solutions |
| Vendor | XACK,Inc. |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Resource management error
EUVDB-ID: #VU28748
Risk: High
CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-5591
CWE-ID:
CWE-399 - Resource Management Errors
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper management of internal resources with the applicatoin when using the cache server feature. A remote attacker can perform a NXNSAttack and cause a denial of service condition on the target system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsXACK DNS: 1.7.0 - 1.11.4
External linkshttp://jvn.jp/en/jp/JVN40208370/index.html
http://www.nxnsattack.com/
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
