Cisco IOS XR up to 4.2.0 IPv6 Packet 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 classified as problematic was found in Cisco IOS XR up to 4.2.0. The impacted element is an unknown function of the component IPv6 Packet Handler. The manipulation results in resource management. This vulnerability is reported as CVE-2015-0769. No exploit exists. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Cisco IOS XR up to 4.2.0 (Router Operating System). Affected is an unknown function of the component IPv6 Packet Handler. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

Cisco IOS XR 4.0.1 through 4.2.0 for CRS-3 Carrier Routing System allows remote attackers to cause a denial of service (NPU ASIC scan and line-card reload) via crafted IPv6 extension headers, aka Bug ID CSCtx03546.

The weakness was disclosed 06/11/2015 with Cisco as cisco-sa-20150611-iosxr as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2015-0769 since 01/07/2015. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The advisory points out:

The vulnerability is due to incorrect processing of an IPv6 packet carrying IPv6 extension headers that are valid but unlikely to be seen during normal operation. An attacker could exploit this vulnerability by sending such an IPv6 packet to an affected device that is configured to process IPv6 traffic. An exploit could allow the attacker to cause a reload of the line card, resulting in a DoS condition.

The vulnerability scanner Nessus provides a plugin with the ID 84287 , which helps to determine the existence of the flaw in a target environment. It is .

Upgrading eliminates this vulnerability.It is possible to mitigate the weakness by firewalling IPv6. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (103794), Tenable (84287), SecurityFocus (BID 75155†), SecurityTracker (ID 1032563†) and Vulnerability Center (SBV-50544†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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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

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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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Nessus ID: 84287
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Port: 🔍

OpenVAS ID: 103403
OpenVAS Name: Cisco IOS XR Software Crafted IPv6 Packet Denial of Service Vulnerability
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Firewalling: 🔍

Timelineinfo

01/07/2015 🔍
06/11/2015 +155 days 🔍
06/11/2015 +0 days 🔍
06/11/2015 +0 days 🔍
06/11/2015 +0 days 🔍
06/12/2015 +1 days 🔍
06/12/2015 +0 days 🔍
06/12/2015 +0 days 🔍
06/14/2015 +2 days 🔍
06/19/2015 +5 days 🔍
05/21/2022 +2527 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20150611-iosxr
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-0769 (🔍)
GCVE (CVE): GCVE-0-2015-0769
GCVE (VulDB): GCVE-100-75852
X-Force: 103794 - Cisco IOS XR IPv6 denial of service
SecurityFocus: 75155 - Cisco IOS XR Software CVE-2015-0769 Denial of Service Vulnerability
SecurityTracker: 1032563 - Cisco IOS XR IPv6 Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 50544 - [cisco-sa-20150611-iosxr] Cisco IOS XR Remote DoS via Crafted IPv6 Packets, High

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

Entryinfo

Created: 06/12/2015 10:42
Updated: 05/21/2022 01:08
Changes: 06/12/2015 10:42 (75), 06/30/2017 05:59 (7), 05/21/2022 01:08 (3)
Complete: 🔍
Cache ID: 216:1AD:103

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