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AUSCERT External Security Bulletin Redistribution
ESB-2015.2457
Cisco Prime Network Registrar Privilege Escalation Vulnerability
21 September 2015
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AusCERT Security Bulletin Summary
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Product: Cisco Prime Network Registrar
Publisher: Cisco Systems
Operating System: Cisco
VMware ESX Server
Impact/Access: Root Compromise -- Existing Account
Resolution: Mitigation
CVE Names: CVE-2015-6296
Original Bulletin:
http://tools.cisco.com/security/center/viewAlert.x?alertId=41041
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Vulnerability Alert
Cisco Prime Network Registrar Privilege Escalation Vulnerability
Threat Type: CWE-264: Permissions, Privileges, and Access Control
IntelliShield ID: 41041
Version: 1
First Published: 2015 September 17 21:02 GMT
Last Published: 2015 September 17 21:02 GMT
Port: Not available
CVE: CVE-2015-6296
Urgency: Unlikely Use
Credibility: Confirmed
Severity: Mild Damage
CVSS Base: 6.8
CVSS Temporal: 6.5
Version Summary: Cisco Prime Network Registrar contains a vulnerability that
could allow an authenticated, local attacker to gain elevated privileges on a
targeted application. Updates are not available.
Description
A vulnerability in the default configuration of the Cisco Prime Network
Registrar (CPNR) virtual appliance (OVA) which could allow an authenticated,
local attacker to gain root privileges.
The vulnerability is due to an insecure default account present on the
affected device. A local attacker could exploit the vulnerability by using the
insecure default account to gain additional privileges on the affected device.
If successful, the attacker could gain root privileges and possibly compromise
the affected device.
Cisco has confirmed the vulnerability; however, software updates are not
available.
Warning Indicators
At the time this alert was first published, Cisco Prime Network Registrar
versions 8.1(3.3), 8.2(3), and 8.3(2) were vulnerable. Other versions may also
be affected.
IntelliShield Analysis
To exploit this vulnerability, an attacker must authenticate to the targeted
device with local account access. This access requirement reduces the
likelihood of a successful exploit.
Cisco indicates through the CVSS score that functional exploit code exists;
however, the code is not known to be publicly available.
Vendor Announcements
Cisco has released bug ID CSCuw21825 for registered users, which contains
additional details and an up-to-date list of affected product versions.
Impact
An authenticated, local attacker could exploit this vulnerability to elevate
privileges and gain control of a targeted system.
Technical Information
The vulnerability is due to an insecure default account present on the
affected device.
An attacker could exploit the vulnerability by using the insecure default
account to gain additional privileges on the affected device. An exploit could
allow the attacker to gain root privileges and possibly compromise the
targeted device
Safeguards
Administrators are advised to contact the vendor regarding future updates and
releases.
Administrators are advised to allow only trusted users to have network access.
Administrators are advised to allow only privileged users to access
administration or management systems.
Administrators are advised to monitor affected systems.
Patches/Software
Software updates are not available.
Alert History
Initial Release
Product Sets
The security vulnerability applies to the following combinations of products.
Primary Products:
Cisco Cisco Prime Network Registrar 8.1 .3.3 | 8.2 .3 | 8.3 .2
Associated Products:
N/A
LEGAL DISCLAIMER
The urgency and severity ratings of this alert are not tailored to individual
users; users may value alerts differently based upon their network
configurations and circumstances. THE ALERT, AND INFORMATION CONTAINED
THEREIN, ARE PROVIDED ON AN "AS IS" BASIS AND DO NOT IMPLY ANY KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE ALERT, AND INFORMATION CONTAINED
THEREIN, OR MATERIALS LINKED FROM THE ALERT, IS AT YOUR OWN RISK. INFORMATION
IN THIS ALERT AND ANY RELATED COMMUNICATIONS IS BASED ON OUR KNOWLEDGE AT THE
TIME OF PUBLICATION AND IS SUBJECT TO CHANGE WITHOUT NOTICE. CISCO RESERVES
THE RIGHT TO CHANGE OR UPDATE ALERTS AT ANY TIME.
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