Cisco IOS up to 15.6 Network Address Translation resource management

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco IOS up to 15.6. It has been rated as problematic. Impacted is an unknown function of the component Network Address Translation. This manipulation causes resource management. This vulnerability appears as CVE-2017-12231. The attack may be initiated remotely. In addition, an exploit is available. It is advisable to implement restrictive firewalling.

Detailsinfo

A vulnerability was found in Cisco IOS up to 15.6 (Router Operating System). It has been declared as problematic. Affected by this vulnerability is an unknown function of the component Network Address Translation. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability in the implementation of Network Address Translation (NAT) functionality in Cisco IOS 12.4 through 15.6 could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to the improper translation of H.323 messages that use the Registration, Admission, and Status (RAS) protocol and are sent to an affected device via IPv4 packets. An attacker could exploit this vulnerability by sending a crafted H.323 RAS packet through an affected device. A successful exploit could allow the attacker to cause the affected device to crash and reload, resulting in a DoS condition. This vulnerability affects Cisco devices that are configured to use an application layer gateway with NAT (NAT ALG) for H.323 RAS messages. By default, a NAT ALG is enabled for H.323 RAS messages. Cisco Bug IDs: CSCvc57217.

The bug was discovered 09/27/2017. The weakness was presented 09/29/2017 with Cisco (Website). The advisory is shared at securitytracker.com. This vulnerability is known as CVE-2017-12231 since 08/03/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are unknown but an exploit is available.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 103669 (Cisco IOS Software NAT denial of service (cisco-sa-20170927-nat)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context c. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316154 (Cisco IOS Software Network Address Translation Denial of Service Vulnerability (cisco-sa-20170927-nat)). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 03/03/2022 with a due date of 03/24/2022:

Apply updates per vendor instructions.

Proper firewalling of is able to address this issue. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103669) and SecurityFocus (BID 101039†). See VDB-107237, VDB-107236, VDB-107235 and VDB-107234 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 103669
Nessus Name: Cisco IOS Software NAT denial of service (cisco-sa-20170927-nat)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/03/2017 🔍
09/27/2017 +55 days 🔍
09/27/2017 +0 days 🔍
09/27/2017 +0 days 🔍
09/28/2017 +1 days 🔍
09/29/2017 +1 days 🔍
09/29/2017 +0 days 🔍
10/05/2017 +6 days 🔍
09/09/2024 +2531 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: securitytracker.com⛔
Researcher: Cisco
Organization: Cisco
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-12231 (🔍)
GCVE (CVE): GCVE-0-2017-12231
GCVE (VulDB): GCVE-100-107233

OVAL: 🔍

SecurityFocus: 101039 - Cisco IOS Software CVE-2017-12231 Remote Denial of Service Vulnerability
SecurityTracker: 1039449

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 09/29/2017 12:00
Updated: 09/09/2024 22:29
Changes: 09/29/2017 12:00 (71), 11/20/2019 11:49 (6), 01/14/2021 17:10 (2), 01/14/2021 17:16 (1), 04/23/2024 18:43 (27), 07/17/2024 02:26 (1), 09/09/2024 22:29 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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