Cisco IOS XR up to 5.2.5 on Network Convergence System 6000 SCP/FTP access control

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.
6.3	$0-$5k	0.00

A vulnerability has been found in Cisco IOS XR up to 5.2.5 on Network Convergence System 6000 (Router Operating System) and classified as critical. Affected by this vulnerability is some unknown processing of the component SCP/FTP. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect integrity, and availability. The summary by CVE is:

The SCP and SFTP modules in Cisco IOS XR 5.0.0 through 5.2.5 on Network Convergence System 6000 devices use weak permissions for system files, which allows remote authenticated users to cause a denial of service (overwrite) via unspecified vectors, aka Bug ID CSCuw75848.

The weakness was published 03/24/2016 as CSCuw75848 as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2016-1366 since 01/04/2016. The exploitation appears to be easy. The attack can be launched remotely. Required for exploitation is a single authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 90357 (Cisco IOS XR SCP and SFTP Modules DoS (cisco-sa-20160323-ncs)), 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.

Upgrading eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (90357) and Vulnerability Center (SBV-57705†).

Productinfo

Type

Router Operating System

Vendor

Cisco

Name

IOS XR

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
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: Access control
CWE: CWE-264
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: 90357
Nessus Name: Cisco IOS XR SCP and SFTP Modules DoS (cisco-sa-20160323-ncs)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 103403
OpenVAS Name: Cisco IOS XR Software SCP and SFTP Modules Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/04/2016 🔍
03/23/2016 +79 days 🔍
03/23/2016 +0 days 🔍
03/23/2016 +0 days 🔍
03/24/2016 +0 days 🔍
03/24/2016 +0 days 🔍
03/27/2016 +3 days 🔍
04/06/2016 +10 days 🔍
07/11/2022 +2287 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuw75848
Status: Confirmed

CVE: CVE-2016-1366 (🔍)
SecurityTracker: 1035407
Vulnerability Center: 57705 - [cisco-sa-20160323-ncs] Cisco Network Convergence System Series 6000 Remote DoS due to Improper Settings, Medium

scip Labs: https://www.scip.ch/en/?labs.20150108

Entryinfo

Created: 03/27/2016 07:14 PM
Updated: 07/11/2022 03:06 PM
Changes: 03/27/2016 07:14 PM (68), 02/02/2019 11:41 AM (11), 07/11/2022 03:06 PM (4)
Complete: 🔍
Cache ID: 18:FF3:40

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