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CVE-2018-0273

CVE information

Published

4 years ago

Last Modified

2 years ago

CVSSv2.0 Severity

Medium

CVSSv3.1 Severity

Medium

Impact Analysis

Description

A vulnerability in the IPsec Manager of Cisco StarOS for Cisco Aggregation Services Router (ASR) 5000 Series Routers and Virtualized Packet Core (VPC) System Software could allow an unauthenticated, remote attacker to terminate all active IPsec VPN tunnels and prevent new tunnels from being established, resulting in a denial of service (DoS) condition. The vulnerability is due to improper processing of corrupted Internet Key Exchange Version 2 (IKEv2) messages. An attacker could exploit this vulnerability by sending crafted IKEv2 messages toward an affected router. A successful exploit could allow the attacker to cause the ipsecmgr service to reload. A reload of this service could cause all IPsec VPN tunnels to be terminated and prevent new tunnels from being established until the service has restarted, resulting in a DoS condition. This vulnerability affects the following Cisco products when they are running Cisco StarOS: Cisco Aggregation Services Router (ASR) 5000 Series Routers, Virtualized Packet Core (VPC) System Software. Cisco Bug IDs: CSCve29605..

CVSSv2.0 Score

Severity
Medium
Base Score
5/10
Exploit Score
10/10
Access Vector
Network
Access Complexity
Low
Authentication Required
None
Impact Score
2.9/10
Confidentiality Impact
None
Availability Impact
Partial
Integrity Impact
None

CVSSv3.1 Score

Severity
Medium
Base Score
5.3/10
Exploit Score
3.9/10
Access Vector
Network
Access Complexity
Low
Privileges Required
None
Impact Score
1.4/10
Confidentiality Impact
None
Availability Impact
Low
Integrity Impact
None
Scope
Unchanged
User Interaction
None

Products Affected

CPE Affected Vulnerable Excluding Edit
cpe:2.3:o:cisco:staros:19.4.2.65120:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:cisco:staros:19.6.0:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:cisco:staros:21.2.0:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:cisco:staros:21.2.6:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:o:cisco:staros:21.4.0:*:*:*:*:*:*:*
  Yes
-
cpe:2.3:h:cisco:asr_5500:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:asr_5700:-:*:*:*:*:*:*:*
  No
-
cpe:2.3:h:cisco:asr_5000:-:*:*:*:*:*:*:*
  No
-

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sudo snap install multipass

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multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

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1. If you don’t have it already, install Brew. Then, to install Multipass simply execute:

brew install --cask multipass

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multipass launch -c 2 -m 6G -d 20G -n mageni 20.04 && multipass shell mageni

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curl -sL https://www.mageni.net/installation | sudo bash

1. Download the installer for Windows

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2. Ensure your network is private

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