[NEWS] IBM Informix Dynamic Server DBPATH Buffer Overflow



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IBM Informix Dynamic Server DBPATH Buffer Overflow
------------------------------------------------------------------------


SUMMARY

A vulnerability allows remote attackers to execute arbitrary code on
systems with vulnerable installations of IBM's Informix Dynamic Server.
User interaction is not required to exploit this vulnerability.
Authentication is required in that an attacker must have database
connection priviliges.

DETAILS

Vulnerable Systems:
* IBM Informix

The specific flaw exists in the oninit.exe process that listens by default
on TCP port 1526. During authentication, the process does not validate the
length of the DBPATH variable. An attacker can provide a overly long
variable name and overflow a global buffer, overwriting function pointers
leading to arbitrary code execution.

Vendor Response:
IBM has issued an update to correct this vulnerability. More details can
be found at:
<http://www-1.ibm.com/support/docview.wss?uid=swg1IC55208>
http://www-1.ibm.com/support/docview.wss?uid=swg1IC55208
<http://www-1.ibm.com/support/docview.wss?uid=swg1IC55207>
http://www-1.ibm.com/support/docview.wss?uid=swg1IC55207

<Disclosure Timeline:> Disclosure Timeline:
2007-11-07 - Vulnerability reported to vendor
2008-03-13 - Coordinated public release of advisory

CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-0727>
CVE-2008-0727


ADDITIONAL INFORMATION

The information has been provided by <mailto:zdi-disclosures@xxxxxxxx>
The Zero Day Initiative (ZDI).
The original article can be found at:
<http://www.zerodayinitiative.com/advisories/ZDI-08-011>
http://www.zerodayinitiative.com/advisories/ZDI-08-011



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