Cisco IOS up to 15.4 TCP Input input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS up to 15.4. It has been classified as problematic. This impacts an unknown function of the component TCP Input Module. This manipulation causes input validation. This vulnerability appears as CVE-2014-2111. There is no available exploit. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability has been found in Cisco IOS up to 15.4 (Router Operating System) and classified as critical. Affected by this vulnerability is an unknown code block of the component TCP Input Module. 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 Application Layer Gateway (ALG) module in Cisco IOS 12.2 through 12.4 and 15.0 through 15.4, when NAT is used, allows remote attackers to cause a denial of service (device reload) via crafted DNS packets, aka Bug ID CSCue00996.

The weakness was presented 03/26/2014 with Cisco as cisco-sa-20140326-nat as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is known as CVE-2014-2111 since 02/25/2014. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 73345 (Cisco IOS Software Multiple Network Address Translation (NAT) Denial of Service Vulnerabilities (cisco-sa-20140326-nat)), 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 43377 (Cisco IOS Network Address Translation Denial of Service Vulnerabilities (cisco-sa-20140326-nat)).

Applying the patch cisco-sa-20140326-nat is able to eliminate this problem. The bugfix is ready for download at tools.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 (92058), Tenable (73345), SecurityFocus (BID 66470†), SecurityTracker (ID 1029960†) and Vulnerability Center (SBV-43767†). See VDB-12702 for similar entry. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 73345
Nessus Name: Cisco IOS Software Multiple Network Address Translation (NAT) Denial of Service Vulnerabilities (cisco-sa-20140326-nat)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: cisco-sa-20140326-nat

Timelineinfo

02/25/2014 🔍
03/26/2014 +29 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
03/26/2014 +0 days 🔍
03/27/2014 +1 days 🔍
03/27/2014 +0 days 🔍
03/27/2014 +0 days 🔍
06/16/2021 +2638 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20140326-nat
Organization: Cisco
Status: Confirmed

CVE: CVE-2014-2111 (🔍)
GCVE (CVE): GCVE-0-2014-2111
GCVE (VulDB): GCVE-100-12703

IAVM: 🔍

X-Force: 92058 - Cisco IOS ALG module denial of service, High Risk
SecurityFocus: 66470 - Cisco IOS Network Address Translation Multiple Denial of Service Vulnerabilities
SecurityTracker: 1029960 - Cisco IOS Bugs in DNS ALG and TCP Input Module Let Remote Users Deny Service
Vulnerability Center: 43767 - [cisco-sa-20140326-nat] Cisco IOS Remote DoS Vulnerability via Crafted NAT DNS Packets in ALG, High

See also: 🔍

Entryinfo

Created: 03/27/2014 12:03
Updated: 06/16/2021 09:13
Changes: 03/27/2014 12:03 (79), 05/24/2017 10:38 (4), 06/16/2021 09:13 (3)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Want to know what is going to be exploited?

We predict KEV entries!