VDB-97419 · CVE-2017-3826 · BID 96509

Cisco NetFlow Generation Appliance up to 1.1 SCTP Hang resource management

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability was found in Cisco NetFlow Generation Appliance up to 1.1. It has been rated as problematic. This vulnerability affects unknown code of the component SCTP Handler. Performing a manipulation results in resource management (Hang). This vulnerability is cataloged as CVE-2017-3826. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco NetFlow Generation Appliance up to 1.1. This affects an unknown function of the component SCTP Handler. The manipulation with an unknown input leads to a resource management vulnerability (Hang). CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

A vulnerability in the Stream Control Transmission Protocol (SCTP) decoder of the Cisco NetFlow Generation Appliance (NGA) with software before 1.1(1a) could allow an unauthenticated, remote attacker to cause the device to hang or unexpectedly reload, causing a denial of service (DoS) condition. The vulnerability is due to incomplete validation of SCTP packets being monitored on the NGA data ports. An attacker could exploit this vulnerability by sending malformed SCTP packets on a network that is monitored by an NGA data port. SCTP packets addressed to the IP address of the NGA itself will not trigger this vulnerability. An exploit could allow the attacker to cause the appliance to become unresponsive or reload, causing a DoS condition. User interaction could be needed to recover the device using the reboot command from the CLI. The following Cisco NetFlow Generation Appliances are vulnerable: NGA 3140, NGA 3240, NGA 3340. Cisco Bug IDs: CSCvc83320.

The bug was discovered 03/01/2017. The weakness was shared 03/01/2017 with Cisco as cisco-sa-20170301-nga / CSCvc83320 as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. This vulnerability is uniquely identified as CVE-2017-3826 since 12/21/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. The advisory points out:

The vulnerability is due to incomplete validation of SCTP packets being monitored on the NGA data ports. An attacker could exploit this vulnerability by sending malformed SCTP packets on a network that is monitored by an NGA data port. SCTP packets addressed to the IP address of the NGA itself will not trigger this vulnerability.

Upgrading to version 1.1(1a) eliminates this vulnerability. The advisory contains the following remark:

User interaction could be needed to recover the device using the reboot command from the CLI.

The vulnerability is also documented in the databases at SecurityFocus (BID 96509†) and SecurityTracker (ID 1037938†). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Affected

  • Cisco NGA 3140/3240/3340

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Hang
Class: Resource management / Hang
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: NetFlow Generation Appliance 1.1(1a)

Timelineinfo

12/21/2016 🔍
03/01/2017 +70 days 🔍
03/01/2017 +0 days 🔍
03/01/2017 +0 days 🔍
03/01/2017 +0 days 🔍
03/02/2017 +1 days 🔍
03/02/2017 +0 days 🔍
08/18/2020 +1265 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco-sa-20170301-nga / CSCvc83320
Organization: Cisco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-3826 (🔍)
GCVE (CVE): GCVE-0-2017-3826
GCVE (VulDB): GCVE-100-97419
SecurityFocus: 96509 - Multiple Cisco NetFlow Generation Appliances CVE-2017-3826 Denial of Service Vulnerability
OSVDB: - CVE-2017-3826 - Cisco - NGA - Denial of Service Issue
SecurityTracker: 1037938

Entryinfo

Created: 03/02/2017 10:00
Updated: 08/18/2020 10:09
Changes: 03/02/2017 10:00 (70), 08/18/2020 10:09 (6)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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