Bug 826262 (CVE-2012-2657)

Summary: CVE-2012-2657 unixodbc: buffer overflow due to improper checking of FILESDN= input
Product: [Other] Security Response Reporter: Vincent Danen <vdanen>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: hhorak, ldimaggi, tgl
Target Milestone: ---Keywords: Security
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Hardware: All   
OS: Linux   
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Last Closed: 2012-05-30 21:22:04 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Bug Blocks: 826265    

Description Vincent Danen 2012-05-29 21:29:28 UTC 
It was reported that the unixODBC library does not properly check the input from the FILESDN= option in the DSN, which could cause a buffer overflow when passed to the SQLDriverConnect() function.  The vulnerable versions are reported as being >= 2.0.10.

This has not been corrected upstream as of yet.
Comment 1 Vincent Danen 2012-05-29 21:36:15 UTC 
The original report to oss-security is here:

http://www.openwall.com/lists/oss-security/2012/05/29/7
Comment 5 Vincent Danen 2012-05-30 21:22:04 UTC 
The DSN can only be supplied from a trusted environment, such as a configuration file or in a script written by the author (such as a PHP script).  The DSN should never come from an untrusted source (such as user input) in these cases.  The isql tool allows a user to supply an arbitrary DSN, but the end result there is the termination of the isql tool itself.

Statement:

Red Hat does not consider a user assisted client crash such as this to be a security flaw.