Vulnerability identifier: #VU4237

Vulnerability risk: High

CVSSv3.1: 6.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:F/RL:O/RC:C]

CVE-ID: CVE-2012-1675

CWE-ID: CWE-300

Exploitation vector: Network

Exploit availability: Yes

Vulnerable software:
Oracle Database Server
Server applications / Database software

Vendor: Oracle

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.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Oracle Database Server: 10.2.0.3 - 11.2.0.4

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External links
http://www.oracle.com/technetwork/topics/security/alert-cve-2012-1675-1608180.html

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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. However, a fully functional exploit for this vulnerability is available.