Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256
===========================================================================
AUSCERT External Security Bulletin Redistribution
ESB-2017.2948
Cisco Immunet Antimalware Installer DLL Preloading Vulnerability
17 November 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: Cisco Immunet Antimalware Installer
Publisher: Cisco Systems
Operating System: Windows
Impact/Access: Administrator Compromise -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2017-12312
Original Bulletin:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20171115-iami
- --------------------------BEGIN INCLUDED TEXT--------------------
Cisco Immunet Antimalware Installer DLL Preloading Vulnerability
Severity: Medium
Advisory ID: cisco-sa-20171115-iami
First Published: 2017 November 15 16:00 GMT
Version 1.0: Final
Workarounds: No workarounds available
Cisco Bug IDs:
CSCvf23928
CVE-2017-12312
CWE-20
CVSS Score:
Base 4.2
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:X
CVE-2017-12312
CWE-20
Summary
* An untrusted search path vulnerability in the Cisco Immunet antimalware
installer could allow an authenticated, local attacker to execute arbitrary
code via DLL hijacking if a local user with administrative privileges
executes the installer in the current working directory where a crafted DLL
has been placed by an attacker.
The vulnerability is due to incomplete input validation of path and file
names of a DLL file before it is loaded. An attacker could exploit this
vulnerability by creating a malicious DLL file and installing it in a
specific system directory. A successful exploit could allow the attacker to
execute commands on the underlying Microsoft Windows host with privileges
equivalent to the SYSTEM account. An attacker would need valid user
credentials to exploit this vulnerability.
There are no workarounds that address this vulnerability.
This advisory is available at the following link:
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/
cisco-sa-20171115-iami
Affected Products
* Vulnerable Products
This vulnerability affects Cisco Immunet Antimalware Installer. For
information about affected software releases, consult the Cisco bug ID(s)
at the top of this advisory.
Products Confirmed Not Vulnerable
No other Cisco products are currently known to be affected by this
vulnerability.
Workarounds
* There are no workarounds that address this vulnerability.
Fixed Software
* For information about fixed software releases, consult the Cisco bug ID(s)
at the top of this advisory.
When considering software upgrades, customers are advised to regularly
consult the advisories for Cisco products, which are available from the
Cisco Security Advisories and Alerts page, to determine exposure and a
complete upgrade solution.
In all cases, customers should ensure that the devices to be upgraded
contain sufficient memory and confirm that current hardware and software
configurations will continue to be supported properly by the new release.
If the information is not clear, customers are advised to contact the Cisco
Technical Assistance Center (TAC) or their contracted maintenance
providers.
Exploitation and Public Announcements
* The Cisco Product Security Incident Response Team (PSIRT) is not aware of
any public announcements or malicious use of the vulnerability that is
described in this advisory.
Source
* This vulnerability was reported to Cisco by Kushal Arvind Shah of
Fortinet's FortiGuard Labs.
- -------------------------------------------------------------------------------
Legal Disclaimer
* THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND
OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
FITNESS FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT
OR MATERIALS LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.
A standalone copy or paraphrase of the text of this document that omits the
distribution URL is an uncontrolled copy and may lack important information
or contain factual errors. The information in this document is intended for
end users of Cisco products.
- --------------------------END INCLUDED TEXT--------------------
You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.
NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members. As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.
NOTE: This is only the original release of the security bulletin. It may
not be updated when updates to the original are made. If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.
Contact information for the authors of the original document is included
in the Security Bulletin above. If you have any questions or need further
information, please contact them directly.
Previous advisories and external security bulletins can be retrieved from:
https://www.auscert.org.au/bulletins/
===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967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=gGVk
-----END PGP SIGNATURE-----