Bug 1548305 (CVE-2018-7409) - CVE-2018-7409 unixODBC: Buffer overflow in unicode_to_ansi_copy() can lead to crash or other unspecified impact
Summary: CVE-2018-7409 unixODBC: Buffer overflow in unicode_to_ansi_copy() can lead to...
Alias: CVE-2018-7409
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: 1548306 1571527 1571528 1571529 1891970
Blocks: 1548307
TreeView+ depends on / blocked
Reported: 2018-02-23 05:43 UTC by Sam Fowler
Modified: 2023-12-15 16:01 UTC (History)
14 users (show)

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.
Clone Of:
Last Closed: 2019-08-06 19:18:25 UTC

Attachments (Terms of Use)

System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2019:2336 0 None None None 2019-08-06 12:41:55 UTC
Red Hat Product Errata RHSA-2020:4999 0 None None None 2020-11-10 10:04:07 UTC

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

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