This security advisory describes one high risk vulnerability.
Exploit availability: Yes [Search exploit]Description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to an error in the TNS listener service. A remote attacker can register an existing instance or service name, use man-in-the-middle techniques and read, inject or modify transmitted data.
Successful exploitation of this vulnerability may result in unauthorized access to entire database.
Note: the vulnerability was being actively exploited.
Install update from vendor's website.
Oracle Database Server: 10.2.0.3, 10.2.0.4, 10.2.0.5, 220.127.116.11, 18.104.22.168.0, 22.214.171.124, 126.96.36.199, 188.8.131.52CPE
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. However, a fully functional exploit for this vulnerability is available.