Zero-day vulnerability in Oracle Database Server

Spoofing attack
CVE-2012-1675

Joxean Koret discovered this vulnerability in 2008 and publicly disclosed in 2012.

The vulnerability was used in "TNS Listener Poison Attack"

Vulnerability details

Advisory: SB2012041801 - TNS Listener Poisoning Attack in Oracle Database

Vulnerable component: Oracle Database Server

CVE-ID: CVE-2012-1675

CVSSv3 score: 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

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

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.

External links:

http://seclists.org/fulldisclosure/2012/Apr/343
http://thetechnologygeek.org/oracle-zero-day-vulnerability-still-not-patched/
https://blogs.oracle.com/security/entry/security_alert_for_cve_2012
http://www.oracle.com/technetwork/topics/security/alert-cve-2012-1675-1608180.html
https://lists.opensuse.org/opensuse-security-announce/2012-06/msg00018.html
http://www.informationsecuritybuzz.com/articles/oracle-tns-listener-poison-attack/
http://www.teamshatter.com/topics/general/team-shatter-exclusive/oracle-0-day-tns-listener-poison-at...
https://support.symantec.com/en_US/article.TECH219444.html
https://blog.qualys.com/laws-of-vulnerabilities/2012/05/01/oracle-adresses-0-day-tns-poison
http://pfierens.blogspot.com/2014/10/cve-2012-1675-listener-poisoning.html
http://searchsecurity.techtarget.com/tip/Using-the-network-to-prevent-an-Oracle-TNS-Listener-poison-...



About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.