Cisco StarOS for ASR 5000 Series Routers IPsec VPN Tunnel DoS (cisco-sa-20170621-asr)

medium Nessus Plugin ID 102202
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Synopsis

The remote device is affected by a denial of service vulnerability.

Description

According to its self-reported version and model number, the remote Cisco ASR device is affected by a denial of service vulnerability in StarOS in the IPsec component that is triggered during the handling of specially crafted IKE messages. This may allow a remote attacker to terminate all active IPsec VPN tunnels and prevent new tunnels from establishing.

Solution

Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvc21129.

See Also

http://www.nessus.org/u?d4fe9746

https://tools.cisco.com/bugsearch/bug/CSCvc21129

Plugin Details

Severity: Medium

ID: 102202

File Name: cisco-sa-20170621-asr.nasl

Version: 1.7

Type: local

Family: CISCO

Published: 8/4/2017

Updated: 11/12/2019

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 1.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5.1

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:staros, cpe:/h:cisco:asr_5000, cpe:/a:cisco:asr_5000_series_software

Required KB Items: Host/Cisco/ASR/Model, Host/Cisco/StarOS

Exploit Ease: No known exploits are available

Patch Publication Date: 6/21/2017

Vulnerability Publication Date: 6/21/2017

Reference Information

CVE: CVE-2017-3865

CISCO-BUG-ID: CSCvc21129

CISCO-SA: cisco-sa-20170621-asr