Cisco IOS XR 4.2.3.BASE/5.0.1.BASE TACACS+ Packet input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS XR 4.2.3.BASE/5.0.1.BASE. It has been declared as problematic. The impacted element is an unknown function of the component TACACS+ Packet Handler. The manipulation results in input validation. This vulnerability was named CVE-2014-3378. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco IOS XR 4.2.3.BASE/5.0.1.BASE (Router Operating System). It has been classified as problematic. Affected is some unknown processing of the component TACACS+ Packet Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

tacacsd in Cisco IOS XR 5.1 and earlier allows remote attackers to cause a denial of service (process reload) via a malformed TACACS+ packet, aka Bug ID CSCum00468.

The weakness was presented 09/18/2014 with Cisco as CSCum00468 as confirmed security notice (Website). The advisory is shared for download at tools.cisco.com. This vulnerability is traded as CVE-2014-3378 since 05/07/2014. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 5.2.0.11i.BASE eliminates this vulnerability. The upgrade is hosted for download at software.cisco.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (96067), SecurityFocus (BID 69957†), Secunia (SA59632†), SecurityTracker (ID 1030878†) and Vulnerability Center (SBV-46218†). Further details are available at tools.cisco.com. See VDB-67666, VDB-67667 and VDB-67669 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
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: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: IOS XR 5.2.0.11i.BASE

Timelineinfo

05/07/2014 🔍
09/18/2014 +134 days 🔍
09/18/2014 +0 days 🔍
09/18/2014 +0 days 🔍
09/19/2014 +1 days 🔍
09/19/2014 +0 days 🔍
09/20/2014 +1 days 🔍
09/20/2014 +0 days 🔍
09/21/2014 +1 days 🔍
09/23/2014 +2 days 🔍
06/06/2017 +987 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: CSCum00468
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-3378 (🔍)
GCVE (CVE): GCVE-0-2014-3378
GCVE (VulDB): GCVE-100-67668
X-Force: 96067 - Cisco IOS XR TACACS+ denial of service, Medium Risk
SecurityFocus: 69957 - Cisco IOS XR Software CVE-2014-3378 TACACS+ Packet Parsing Denial of Service Vulnerability
Secunia: 59632 - Cisco IOS XR TACACS+ Packet Handling Denial of Service Vulnerability, Less Critical
SecurityTracker: 1030878 - Cisco IOS XR Packet Processing Flaws Let Remote and Remote Authenticated Users Deny Service
Vulnerability Center: 46218 - Cisco IOS XR <=5.1 Remote DoS via Malformed TACACS+ Packets, Medium

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

Entryinfo

Created: 09/23/2014 14:46
Updated: 06/06/2017 08:43
Changes: 09/23/2014 14:46 (78), 06/06/2017 08:43 (3)
Complete: 🔍
Cache ID: 216:A2B:103

Once again VulDB remains the best source for vulnerability data.

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