Cisco IOS XE/ASA 5500-X IPsec Driver IPsec Authentication Header input validation

CVSS Meta Temp Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Cisco IOS XE and ASA 5500-X. This vulnerability affects unknown code of the component IPsec Driver. Executing a manipulation as part of IPsec Authentication Header can lead to input validation. The identification of this vulnerability is CVE-2018-0472. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Cisco IOS XE and ASA 5500-X (Router Operating System) (unknown version). It has been declared as critical. This vulnerability affects an unknown code block of the component IPsec Driver. The manipulation as part of a IPsec Authentication Header 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. CVE summarizes:

A vulnerability in the IPsec driver code of multiple Cisco IOS XE Software platforms and the Cisco ASA 5500-X Series Adaptive Security Appliance (ASA) could allow an unauthenticated, remote attacker to cause the device to reload. The vulnerability is due to improper processing of malformed IPsec Authentication Header (AH) or Encapsulating Security Payload (ESP) packets. An attacker could exploit this vulnerability by sending malformed IPsec packets to be processed by an affected device. An exploit could allow the attacker to cause a reload of the affected device.

The bug was discovered 09/26/2018. The weakness was shared 10/05/2018 as cisco-sa-20180926-ipsec as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2018-0472 since 11/26/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 117948 (Cisco IOS XE Software IPsec DoS Vulnerability (cisco-sa-20180926-ipsec)), 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 l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 316321 (Cisco IOS XE Software and Cisco ASA 5500-X Series Adaptive Security Appliance IPsec Denial of Service Vulnerability(cisco-sa-20180926-ipsec)).

Upgrading eliminates this vulnerability. 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 (117948) and SecurityFocus (BID 105418†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.6
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117948
Nessus Name: Cisco IOS XE Software IPsec DoS Vulnerability (cisco-sa-20180926-ipsec)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/26/2017 🔍
09/26/2018 +303 days 🔍
09/26/2018 +0 days 🔍
09/26/2018 +0 days 🔍
10/05/2018 +8 days 🔍
10/05/2018 +0 days 🔍
10/05/2018 +0 days 🔍
10/06/2018 +1 days 🔍
05/22/2023 +1689 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20180926-ipsec
Status: Confirmed

CVE: CVE-2018-0472 (🔍)
GCVE (CVE): GCVE-0-2018-0472
GCVE (VulDB): GCVE-100-124864

OVAL: 🔍

SecurityFocus: 105418 - Multiple Cisco Products CVE-2018-0472 Denial Of Service Vulnerability
SecurityTracker: 1041735

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

Entryinfo

Created: 10/06/2018 10:51
Updated: 05/22/2023 13:11
Changes: 10/06/2018 10:51 (72), 03/30/2020 11:36 (4), 05/22/2023 13:11 (4)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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