Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | CVE-2012-1193 |
CWE-ID | CWE-20 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
PowerDNS Recursor Server applications / DNS servers |
Vendor | PowerDNS.COM B.V. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
EUVDB-ID: #VU44267
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: CVE-2012-1193
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote non-authenticated attacker to manipulate or delete data.
The resolver in PowerDNS Recursor (aka pdns_recursor) 3.3 overwrites cached server names and TTL values in NS records during the processing of a response to an A record query, which allows remote attackers to trigger continued resolvability of revoked domain names via a "ghost domain names" attack.
MitigationInstall update from vendor's website.
Vulnerable software versionsPowerDNS Recursor: 3.3
External linkshttp://lists.fedoraproject.org/pipermail/package-announce/2013-April/102729.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104173.html
http://lists.fedoraproject.org/pipermail/package-announce/2013-May/104177.html
http://www.isc.org/files/imce/ghostdomain_camera.pdf
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.