Cisco IOS prior 15.4(3.6)PIB25 on Cisco 2800 LLDP input validation

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

Summaryinfo

A vulnerability marked as problematic has been reported in Cisco IOS on Cisco 2800. Affected by this vulnerability is an unknown functionality of the component LLDP Handler. This manipulation causes input validation. This vulnerability is registered as CVE-2014-3273. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco IOS on Cisco 2800 (Router Operating System). It has been declared as problematic. Affected by this vulnerability is an unknown code of the component LLDP Handler. 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. The summary by CVE is:

The LLDP implementation in Cisco IOS allows remote attackers to cause a denial of service (device reload) via a malformed packet, aka Bug ID CSCum96282.

The weakness was published 05/19/2014 with Cisco as CSCum96282 as confirmed security notice (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2014-3273 since 05/07/2014. The exploitation appears to be easy. The attack needs to be initiated within the local network. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The advisory points out:

The vulnerability is due to incorrect handling of malformed LLDP packets. An attacker could exploit this vulnerability by sending a malformed LLDP packet destined to a switch when LLDP is enabled on an affected device. An exploit could allow the attacker to cause a reload of the affected device.

The vulnerability scanner Nessus provides a plugin with the ID 74147 (Cisco IOS LLDP Request Processing DoS), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43048 (Cisco IOS Link Layer Discovery Protocol Denial of Service Vulnerability).

Upgrading to version 15.4(2.4)T, 15.4(2.11)S, 15.4(3.1)XEB, 15.4(3.6)PIB25, 15.2(1)IC273.53 or 15.1(2)IC66.1 eliminates this vulnerability. The upgrade is hosted for download at software.cisco.com. It is possible to mitigate the problem by applying the configuration setting Disable CIP. 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 (93222), Tenable (74147), SecurityFocus (BID 67489†), Secunia (SA58705†) and SecurityTracker (ID 1030257†). Similar entry is available at VDB-13258. Be aware that VulDB is the high quality source for vulnerability data.

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: 🔍
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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: 74147
Nessus Name: Cisco IOS LLDP Request Processing DoS
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: IOS 15.4(2.4)T/15.4(2.11)S/15.4(3.1)XEB/15.4(3.6)PIB25/15.2(1)IC273.53/15.1(2)IC66.1
Config: Disable CIP

Timelineinfo

05/07/2014 🔍
05/19/2014 +12 days 🔍
05/19/2014 +0 days 🔍
05/19/2014 +0 days 🔍
05/20/2014 +1 days 🔍
05/20/2014 +0 days 🔍
05/20/2014 +0 days 🔍
05/20/2014 +0 days 🔍
05/20/2014 +0 days 🔍
05/21/2014 +1 days 🔍
05/23/2014 +2 days 🔍
12/17/2024 +3861 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCum96282
Organization: Cisco
Status: Confirmed

CVE: CVE-2014-3273 (🔍)
GCVE (CVE): GCVE-0-2014-3273
GCVE (VulDB): GCVE-100-13255
X-Force: 93222 - Cisco IOS LLDP denial of service, Medium Risk
SecurityFocus: 67489 - Cisco IOS Software LLDP Request Processing Denial of Service Vulnerability
Secunia: 58705 - Cisco IOS Software LLDP Denial of Service Vulnerability, Less Critical
SecurityTracker: 1030257 - Cisco IOS LLDP Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 44581 - Cisco IOS 15.2(2)TST and 15.2(1)T1.11 Remote DoS Vulnerability via a Malformed Packet, Medium

See also: 🔍

Entryinfo

Created: 05/20/2014 10:37
Updated: 12/17/2024 09:14
Changes: 05/20/2014 10:37 (82), 05/28/2017 03:31 (4), 06/19/2021 18:56 (3), 12/17/2024 09:14 (16)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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