Bug 1549636 (CVE-2018-7485)

Summary:	CVE-2018-7485 unixODBC: Insecure buffer copy in SQLWriteFileDSN function in odbcinst/SQLWriteFileDSN.c
Product:	[Other] Security Response	Reporter:	Pedro Sampaio <psampaio>
Component:	vulnerability	Assignee:	Red Hat Product Security <security-response-team>
Status:	CLOSED ERRATA	QA Contact:
Severity:	medium	Docs Contact:
Priority:	medium
Version:	unspecified	CC:	alanm, databases-maint, hhorak, jstanek, mschorm, odubaj, praiskup, tgl, tomm.momi, tvainio, yozone
Target Milestone:	---	Keywords:	Security
Target Release:	---
Hardware:	All
OS:	Linux
Whiteboard:
Fixed In Version:	unixODBC 2.3.6pre	Doc Type:	If docs needed, set a value
Doc Text:	An argument order confusion flaw was found in the SQLWriteFileDSN API of unixODBC. This could only be exploited via a malicious ODBC database connector package with the maximum impact being a denial of service.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2019-08-06 19:18:27 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:	1549637, 1571530, 1571531, 1571532, 1891969
Bug Blocks:	1548307

Description Pedro Sampaio 2018-02-27 14:36:51 UTC

The SQLWriteFileDSN function in odbcinst/SQLWriteFileDSN.c in unixODBC 2.3.5 has strncpy arguments in the wrong order, which allows attackers to cause a denial of service or possibly have unspecified other impact.

Upstream patch:

https://github.com/lurcher/unixODBC/commit/45ef78e037f578b15fc58938a3a3251655e71d6f#diff-d52750c7ba4e594410438569d8e2963aL24

Comment 1 Pedro Sampaio 2018-02-27 14:37:13 UTC

Created unixODBC tracking bugs for this issue:

Affects: fedora-all [bug 1549637]

Comment 3 Huzaifa S. Sidhpurwala 2018-12-11 03:56:31 UTC

Analysis:

This flaw is essentially an argument order confusion in the SQLWriteFileDSN API, can only be exploited via a malicious ODBC database connector package and can possible cause Denial of Service only. We believe that arbitrary code execution is not possible, therefore this flaw has been rated as having Moderate security impact.

Comment 4 errata-xmlrpc 2019-08-06 12:41:55 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 5 Product Security DevOps Team 2019-08-06 19:18:27 UTC

This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2018-7485

Comment 12 errata-xmlrpc 2020-11-10 10:04:05 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