Cisco IOS XR 5.2.1 IPv6 resource management

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Cisco IOS XR 5.2.1. Affected by this vulnerability is an unknown functionality of the component IPv6 Handler. Executing a manipulation can lead to resource management. This vulnerability appears as CVE-2015-4191. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability classified as problematic was found in Cisco IOS XR 5.2.1 (Router Operating System). This vulnerability affects an unknown part of the component IPv6 Handler. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. CVE summarizes:

Cisco IOS XR 5.2.1 allows remote attackers to cause a denial of service (ipv6_io service reload) via a malformed IPv6 packet, aka Bug ID CSCuq95565.

The weakness was presented 06/17/2015 with Cisco as 39383 as confirmed vulnerability alert (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2015-4191 since 06/04/2015. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the databases at X-Force (103918), SecurityFocus (BID 75260†), SecurityTracker (ID 1032615†) and Vulnerability Center (SBV-50606†). Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

06/04/2015 🔍
06/17/2015 +13 days 🔍
06/17/2015 +0 days 🔍
06/17/2015 +0 days 🔍
06/18/2015 +1 days 🔍
06/18/2015 +0 days 🔍
06/18/2015 +0 days 🔍
06/18/2015 +0 days 🔍
07/01/2017 +744 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: 39383
Organization: Cisco
Status: Confirmed

CVE: CVE-2015-4191 (🔍)
GCVE (CVE): GCVE-0-2015-4191
GCVE (VulDB): GCVE-100-75988
X-Force: 103918 - Cisco IOS XR denial of service
SecurityFocus: 75260 - Cisco IOS XR Software CVE-2015-4191 Denial of Service Vulnerability
SecurityTracker: 1032615 - Cisco IOS XR IPv6 ipv6_io Service Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 50606 - Cisco IOS XR Remote DoS via IPv6 Packets, Medium

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

Entryinfo

Created: 06/18/2015 10:36
Updated: 07/01/2017 07:49
Changes: 06/18/2015 10:36 (67), 07/01/2017 07:49 (3)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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