Bug 1548305 (CVE-2018-7409)

Summary: CVE-2018-7409 unixODBC: Buffer overflow in unicode_to_ansi_copy() can lead to crash or other unspecified impact
Product: [Other] Security Response Reporter: Sam Fowler <sfowler>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: alanm, databases-maint, gsuckevi, hhorak, jstanek, mschorm, nupur.priya, odubaj, praiskup, tgl, tomm.momi, tvainio, vyshnav.veetil, yozone
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: unixODBC 2.3.5 Doc Type: If docs needed, set a value
Doc Text:
A buffer overflow flaw was found in the unicode_to_ansi_copy() function of unixODBC. This overflow is not directly controllable by an attacker making the maximum potential impact a crash or denial of service.
Story Points: ---
Clone Of: Environment:
Last Closed: 2019-08-06 19:18:25 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1548306, 1571527, 1571528, 1571529, 1891970    
Bug Blocks: 1548307    

Description Sam Fowler 2018-02-23 05:43:10 UTC
unixODBC before version 2.3.5 is vulnerable to a buffer overflow in the DriverManager/__info.c:unicode_to_ansi_copy() method. An attacker could exploit this to cause a denial of service or other unspecified impact.

Upstream Release:


Upstream Revision:


Comment 1 Sam Fowler 2018-02-23 05:43:29 UTC
Created unixODBC tracking bugs for this issue:

Affects: fedora-all [bug 1548306]

Comment 3 Vyshnav A V 2018-05-15 11:28:29 UTC
When will you provide the fix for CVE-2018-7409 affected to package unixODBC
Thanks and Regards,

Comment 4 nupur priya 2018-07-27 05:39:31 UTC
Is unixODBC available on RHEL6.10 is vulnerable, as the patch is only available for 7.5

Comment 5 Huzaifa S. Sidhpurwala 2018-12-11 04:01:19 UTC

This is essentially a buffer-overflow in the unicode_to_ansi_copy() function. However since the overflow is not directly controllable by the attacker, its maximum impact is crash or denial of service. This flaw has therefore been rated as having Moderate security impact.

Comment 6 errata-xmlrpc 2019-08-06 12:41:54 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7

Via RHSA-2019:2336 https://access.redhat.com/errata/RHSA-2019:2336

Comment 7 Product Security DevOps Team 2019-08-06 19:18:25 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):


Comment 15 errata-xmlrpc 2020-11-10 10:04:03 UTC
This issue has been addressed in the following products:

  Red Hat Enterprise Linux 7.6 Extended Update Support

Via RHSA-2020:4999 https://access.redhat.com/errata/RHSA-2020:4999