Cisco IOS XR up to 6.6.2 PDU Restart denial of service

A vulnerability has been found in Cisco IOS XR up to 6.6.2 (Router Operating System) and classified as problematic. Affected by this vulnerability is an unknown function of the component PDU Handler. The manipulation with an unknown input leads to a denial of service vulnerability (Restart). The CWE definition for the vulnerability is CWE-404. As an impact it is known to affect availability.

The weakness was disclosed 08/07/2019 as cisco-sa-20190807-iosxr-isis-d as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2019-1910 since 12/06/2018. The attack needs to approached within the local network. The exploitation doesn’t need any form of authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/08/2019).

Upgrading to version 6.6.3 eliminates this vulnerability.

The entry 139658 is pretty similar.

Type

• Router Operating System

Vendor

• Cisco

Name

• IOS XR

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VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Denial of service / Restart (CWE-404)
Local: No
Remote: Partially

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

Threat Intelligenceinfoedit

Threat: 🔍
Adversaries: 🔍
Geopolitics: 🔍
Economy: 🔍
Predictions: 🔍
Remediation: 🔍Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: IOS XR 6.6.3

12/06/2018 CVE assigned
08/07/2019 +244 days Advisory disclosed
08/08/2019 +1 days VulDB entry created
08/08/2019 +0 days VulDB last updateVendor: cisco.com

Advisory: cisco-sa-20190807-iosxr-isis-d
Status: Confirmed

CVE: CVE-2019-1910 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔒

Created: 08/08/2019 06:46 AM
Complete: 🔍

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