Cisco IOS/IOS XE EnergyWise input validation

CVSS Meta Temp Score
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6.5$0-$5k0.00

A vulnerability has been found in Cisco IOS and IOS XE (Router Operating System) (the affected version is unknown) and classified as critical. This vulnerability affects an unknown code of the component EnergyWise. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

The EnergyWise module in Cisco IOS 12.2, 15.0, 15.1, 15.2, and 15.4 and IOS XE 3.2.xXO, 3.3.xSG, 3.4.xSG, and 3.5.xE before 3.5.3E allows remote attackers to cause a denial of service (device reload) via a crafted IPv4 packet, aka Bug ID CSCup52101.

The weakness was presented 08/06/2014 with Cisco as cisco-sa-20140806-energywise as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2014-3327 since 05/07/2014. 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.

The vulnerability scanner Nessus provides a plugin with the ID 77154 , which helps to determine the existence of the flaw in a target environment. It is . The advisory illustrates:

To determine whether a Cisco IOS device is configured with EnergyWise, use the show run | include energywise command. The following example is the output of the show run | include energywise command on a Cisco IOS device configured with the minimum EnergyWise configuration needed to enable its operation: Router#show run | include energywise energywise domain test_domain security shared-secret 0 test123

Upgrading eliminates this vulnerability.Proper firewalling of udp/43440 is able to address this issue. 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 (95137) and Tenable (77154).

Productinfo

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CPE 2.3info

CPE 2.2info

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CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
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CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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EPSS Percentile: 🔍

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Nessus ID: 77154
Nessus File: 🔍
Nessus Risk: 🔍
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Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Upgrade
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Firewalling: 🔍

Timelineinfo

05/07/2014 🔍
08/06/2014 +91 days 🔍
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08/07/2014 +1 days 🔍
08/07/2014 +0 days 🔍
08/08/2014 +1 days 🔍
08/11/2014 +3 days 🔍
08/12/2014 +1 days 🔍
02/10/2022 +2739 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20140806-energywise
Organization: Cisco
Status: Confirmed

CVE: CVE-2014-3327 (🔍)
IAVM: 🔍

X-Force: 95137 - Cisco IOS and Cisco IOS XE EnergyWise module denial of service, High Risk
SecurityTracker: 1030682 - Cisco IOS and IOS XE EnergyWise Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 45679 - [cisco-sa-20140806-energywise] Cisco IOS and IOS XE Remote DoS in EnergyWise, High
SecurityFocus: 69066 - Cisco IOS and IOS XE Software CVE-2014-3327 Denial of Service Vulnerability
Secunia: 60650 - Cisco IOS / IOS XE EnergyWise Denial of Service Vulnerability, Less Critical

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

Entryinfo

Created: 08/07/2014 10:23
Updated: 02/10/2022 08:58
Changes: 08/07/2014 10:23 (82), 06/03/2017 07:43 (2), 02/10/2022 08:58 (3)
Complete: 🔍

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