CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.4	$5k-$25k	0.00

A vulnerability, which was classified as very critical, has been found in Cisco NX-OS 7.2/7.3 on Nexus 7000/Nexus 7700 (Router Operating System). This issue affects an unknown function of the component OTV GRE Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in the Overlay Transport Virtualization (OTV) GRE feature in Cisco NX-OS 5.0 through 7.3 on Nexus 7000 and 7700 devices allows remote attackers to execute arbitrary code via long parameters in a packet header, aka Bug ID CSCuy95701.

The weakness was disclosed 10/05/2016 with Cisco as cisco-sa-20161005-otv as confirmed advisory (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2016-1453 since 01/04/2016. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 05/04/2019).

The vulnerability scanner Nessus provides a plugin with the ID 94109 (Cisco NX-OS OTV GRE Packet Header Parameter Handling RCE (cisco-sa-20161005-otv)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316047 (Cisco NX-OS Switches Overlay Transport Virtualization Buffer Overflow Vulnerability (cisco-sa-20161005-otv)).

Upgrading to version 7.2(2)D1(1) or 7.3(1)D1(1) eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (94109). The entries 92479 and 92478 are pretty similar.

Productinfo

Type

• Router Operating System

Vendor

• Cisco

Name

• NX-OS

Version

• 7.2
• 7.3

License

• commercial

Support

• end of life (old version)

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 94109
Nessus Name: Cisco NX-OS OTV GRE Packet Header Parameter Handling RCE (cisco-sa-20161005-otv)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103402
OpenVAS Name: Cisco Nexus 7000 and 7700 Series Switches Overlay Transport Virtualization Buffer Overflow Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: NX-OS 7.2(2)D1(1)/7.3(1)D1(1)
Workaround: IP Access List

Timelineinfo

01/04/2016 🔍
10/05/2016 +275 days 🔍
10/05/2016 +0 days 🔍
10/05/2016 +0 days 🔍
10/05/2016 +0 days 🔍
10/06/2016 +1 days 🔍
10/06/2016 +0 days 🔍
10/18/2016 +12 days 🔍
05/04/2019 +928 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20161005-otv
Organization: Cisco
Status: Confirmed

CVE: CVE-2016-1453 (🔍)
SecurityTracker: 1036946
SecurityFocus: 93409 - Cisco Nexus 7000 and 7700 Series Switches CVE-2016-1453 Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 10/06/2016 21:25
Updated: 05/04/2019 06:09
Changes: 10/06/2016 21:25 (77), 05/04/2019 06:09 (12)
Complete: 🔍

Discussion

Do you need the next level of professionalism?

Upgrade your account now!