Cisco StarOS 21.1.0/21.1.M0.65601/21.1.v0 on ASR 5000 IPSec VPN Tunnel Packet resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Cisco StarOS 21.1.0/21.1.M0.65601/21.1.v0 on ASR 5000. Impacted is an unknown function of the component IPSec VPN Tunnel. This manipulation as part of Packet causes resource management. The identification of this vulnerability is CVE-2017-3865. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability has been found in Cisco StarOS 21.1.0/21.1.M0.65601/21.1.v0 on ASR 5000 (Router Operating System) and classified as problematic. Affected by this vulnerability is an unknown code of the component IPSec VPN Tunnel. The manipulation as part of a Packet 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 IPsec component of Cisco StarOS for Cisco ASR 5000 Series Routers could allow an unauthenticated, remote attacker to terminate all active IPsec VPN tunnels and prevent new tunnels from establishing, resulting in a denial of service (DoS) condition. Affected Products: ASR 5000 Series Routers, Virtualized Packet Core (VPC) Software. More Information: CSCvc21129. Known Affected Releases: 21.1.0 21.1.M0.65601 21.1.v0. Known Fixed Releases: 21.2.A0.65754 21.1.b0.66164 21.1.V0.66014 21.1.R0.65759 21.1.M0.65749 21.1.0.66030 21.1.0.

The bug was discovered 06/21/2017. The weakness was shared 07/04/2017 with Cisco as cisco-sa-20170621-asr as confirmed advisory (Website). The advisory is shared at tools.cisco.com. This vulnerability is known as CVE-2017-3865 since 12/21/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 102202 (Cisco StarOS for ASR 5000 Series Routers IPsec VPN Tunnel DoS (cisco-sa-20170621-asr)), 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.

Upgrading to version 21.2.A0.65754, 21.1.b0.66164, 21.1.V0.66014, 21.1.R0.65759, 21.1.M0.65749, 21.1.0.66030 or 21.1.0 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (102202) and SecurityFocus (BID 99218†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.4

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

NVD Base Score: 5.8
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: Resource management
CWE: CWE-399 / CWE-404
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: 102202
Nessus Name: Cisco StarOS for ASR 5000 Series Routers IPsec VPN Tunnel DoS (cisco-sa-20170621-asr)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: StarOS 21.2.A0.65754/21.1.b0.66164/21.1.V0.66014/21.1.R0.65759/21.1.M0.65749/21.1.0.66030/21.1.0

Timelineinfo

12/21/2016 🔍
06/21/2017 +182 days 🔍
06/21/2017 +0 days 🔍
06/21/2017 +0 days 🔍
07/03/2017 +12 days 🔍
07/04/2017 +1 days 🔍
07/04/2017 +0 days 🔍
08/04/2017 +31 days 🔍
12/30/2020 +1244 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170621-asr
Researcher: Cisco
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-3865 (🔍)
GCVE (CVE): GCVE-0-2017-3865
GCVE (VulDB): GCVE-100-103009
SecurityFocus: 99218 - Cisco StarOS for ASR 5500 Series Routers CVE-2017-3865 Remote Denial of Service Vulnerability
SecurityTracker: 1038748

Entryinfo

Created: 07/04/2017 11:53
Updated: 12/30/2020 13:44
Changes: 07/04/2017 11:53 (71), 10/22/2019 06:57 (6), 12/30/2020 13:37 (2), 12/30/2020 13:44 (1)
Complete: 🔍
Cache ID: 216::103

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

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