Cisco IOS/IOS XE 4.3.4 MPLS Packet input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Cisco IOS and IOS XE 4.3.4. This vulnerability affects unknown code of the component MPLS Packet Handler. The manipulation leads to input validation. This vulnerability is traded as CVE-2014-3321. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Cisco IOS and IOS XE 4.3.4 (Router Operating System). This issue affects an unknown code of the component MPLS Packet Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

Cisco IOS XR 4.3.4 and earlier on ASR 9000 devices, when bridge-group virtual interface (BVI) routing is enabled, allows remote attackers to cause a denial of service (chip and card hangs) via a series of crafted MPLS packets, aka Bug ID CSCuo91149.

The weakness was shared 07/15/2014 with Cisco as CSCuo91149 as confirmed security notice (Website). The advisory is shared at tools.cisco.com. The identification of this vulnerability is CVE-2014-3321 since 05/07/2014. The attack needs to be initiated within the local network. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 77222 , which helps to determine the existence of the flaw in a target environment. It is .

Upgrading to version 5.1.3, 5.2.0 or 5.2.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (94487), Tenable (77222), SecurityFocus (BID 68536†), SecurityTracker (ID 1030597†) and Vulnerability Center (SBV-45404†). tools.cisco.com is providing further details. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.5
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Partially

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 77222
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Port: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: IOS/IOS XE 5.1.3/5.2.0/5.2.2

Timelineinfo

05/07/2014 🔍
07/15/2014 +69 days 🔍
07/15/2014 +0 days 🔍
07/15/2014 +0 days 🔍
07/16/2014 +1 days 🔍
07/16/2014 +0 days 🔍
07/16/2014 +0 days 🔍
07/17/2014 +1 days 🔍
08/18/2014 +32 days 🔍
02/09/2022 +2732 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCuo91149
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-3321 (🔍)
GCVE (CVE): GCVE-0-2014-3321
GCVE (VulDB): GCVE-100-67169
X-Force: 94487 - Cisco IOS XR MPLS denial of service, Medium Risk
SecurityFocus: 68536 - Cisco IOS XR Software MPLS Packet Handling Denial of Service Vulnerability
SecurityTracker: 1030597 - Cisco ASR 9000 Series IOS XR Router MPLS Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 45404 - Cisco IOS-XR on Cisco ASR Routers Remote DoS via Specially Crafted MPLS Packets - CVE-2014-3321, Medium

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

Entryinfo

Created: 07/17/2014 00:33
Updated: 02/09/2022 14:43
Changes: 07/17/2014 00:33 (72), 06/02/2017 07:38 (6), 02/09/2022 14:43 (3)
Complete: 🔍
Cache ID: 216:128:103

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