Cisco IOS XR SNMP input validation

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.
3.8	$0-$5k	0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Cisco IOS XR. Affected by this vulnerability is an unknown functionality of the component SNMP. Performing a manipulation results in input validation. This vulnerability is reported as CVE-2015-0661. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Cisco IOS XR (Router Operating System) (affected version not known). This affects some unknown functionality of the component SNMP. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. The summary by CVE is:

The SNMPv2 implementation in Cisco IOS XR allows remote authenticated users to cause a denial of service (snmpd daemon reload) via a malformed SNMP packet, aka Bug ID CSCur25858.

The weakness was disclosed 03/05/2015 with Cisco as CSCur84322 as confirmed security notice (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2015-0661 since 01/07/2015. It is possible to initiate the attack remotely. A authentication is required for exploitation. The technical details are unknown and an exploit is not publicly available.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at X-Force (101378) and SecurityTracker (ID 1031843†). The entries VDB-69260 and VDB-69261 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Router Operating System

Vendor

Cisco

Name

IOS XR

License

commercial

Website

Vendor: https://www.cisco.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.3
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/07/2015 🔍
03/05/2015 +57 days 🔍
03/05/2015 +0 days 🔍
03/06/2015 +1 days 🔍
03/06/2015 +0 days 🔍
04/15/2018 +1136 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCur84322
Organization: Cisco
Status: Confirmed

CVE: CVE-2015-0661 (🔍)
GCVE (CVE): GCVE-0-2015-0661
GCVE (VulDB): GCVE-100-69267
X-Force: 101378
SecurityTracker: 1031843

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

Entryinfo

Created: 03/06/2015 12:19
Updated: 04/15/2018 09:39
Changes: 03/06/2015 12:19 (51), 04/15/2018 09:39 (6)
Complete: 🔍
Cache ID: 216:21A:103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.