What is the severity of CVE-2015-4203?

CVE-2015-4203 has a CVSS score indicating a high severity vulnerability that can lead to a denial of service.

How do I fix CVE-2015-4203?

To fix CVE-2015-4203, upgrade to a non-vulnerable version of Cisco IOS that addresses the race condition.

What devices are affected by CVE-2015-4203?

CVE-2015-4203 specifically affects Cisco IOS 12.2SCH on uBR10000 devices when certain configurations are in use.

What type of attack is associated with CVE-2015-4203?

CVE-2015-4203 is associated with a denial-of-service attack made possible by sending malformed MPLS 6VPE packets.

Is there a workaround for CVE-2015-4203?

Currently, there are no documented workarounds for CVE-2015-4203 except to apply the relevant software updates.

Vulnerability/
CVE-2015-4203

medium

5.4

CWE

362

23/6/2015

6/8/2024

CVE-2015-4203: Race Condition

First published: Tue Jun 23 2015(Updated: )

Race condition in Cisco IOS 12.2SCH in the Performance Routing Engine (PRE) module on uBR10000 devices, when NetFlow and an MPLS IPv6 VPN are configured, allows remote attackers to cause a denial of service (PXF process crash) by sending malformed MPLS 6VPE packets quickly, aka Bug ID CSCud83396.

Credit: ykramarz@cisco.com

Affected Software	Affected Version	How to fix
Puppet Cisco IOS	=12.2\(33\)sch
Puppet Cisco IOS	=12.2sch
Cisco uBR10000 Cable Modem Termination System

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Reference Links

Frequently Asked Questions

What is the severity of CVE-2015-4203?
CVE-2015-4203 has a CVSS score indicating a high severity vulnerability that can lead to a denial of service.
How do I fix CVE-2015-4203?
To fix CVE-2015-4203, upgrade to a non-vulnerable version of Cisco IOS that addresses the race condition.
What devices are affected by CVE-2015-4203?
CVE-2015-4203 specifically affects Cisco IOS 12.2SCH on uBR10000 devices when certain configurations are in use.
What type of attack is associated with CVE-2015-4203?
CVE-2015-4203 is associated with a denial-of-service attack made possible by sending malformed MPLS 6VPE packets.
Is there a workaround for CVE-2015-4203?
Currently, there are no documented workarounds for CVE-2015-4203 except to apply the relevant software updates.

agent/type
collector/mitre-cve
source/MITRE
agent/last-modified-date
agent/severity
agent/references
agent/author
agent/description
agent/first-publish-date
agent/event
agent/source
agent/weakness
agent/tags
agent/softwarecombine
collector/nvd-index
agent/software-canonical-lookup-request
vendor/cisco
canonical/puppet cisco ios
version/puppet cisco ios/12.2\(33\)sch
version/puppet cisco ios/12.2sch
canonical/cisco ubr10000 cable modem termination system

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