Resource management flaw in Cisco NetFlow Generation Appliance
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Denial of service
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-399 and the CVSS impact.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | Cisco NetFlow Generation Appliance | Cisco NetFlow Generation Appliance | — | No fix listed | CNA |
- Cisco NetFlow Generation Appliance Vendor— Affected Cisco NetFlow Generation Appliance Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:cisco:netflow_generation_appliance_software:1.0\(2\):*:*:*:*:*:*:* | 1.0(2) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:netflow_generation_appliance_software:1.0.0:*:*:*:*:*:*:* | 1.0.0 | Vulnerable | Cisco |
| cpe:2.3:o:cisco:netflow_generation_appliance_software:1.1\(1\):*:*:*:*:*:*:* | 1.1(1) | Vulnerable | Cisco |
| cpe:2.3:o:cisco:netflow_generation_appliance_software:1.1.0:*:*:*:*:*:*:* | 1.1.0 | Vulnerable | Cisco |
| cpe:2.3:h:cisco:netflow_generation_appliance_3140:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:netflow_generation_appliance_3240:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
| cpe:2.3:h:cisco:netflow_generation_appliance_3340:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Cisco |
- cpe:2.3:o:cisco:netflow_generation_appliance_software:1.0\(2\):*:*:*:*:*:*:* Versions 1.0(2) Vulnerable ·Cisco
- cpe:2.3:o:cisco:netflow_generation_appliance_software:1.0.0:*:*:*:*:*:*:* Versions 1.0.0 Vulnerable ·Cisco
- cpe:2.3:o:cisco:netflow_generation_appliance_software:1.1\(1\):*:*:*:*:*:*:* Versions 1.1(1) Vulnerable ·Cisco
- cpe:2.3:o:cisco:netflow_generation_appliance_software:1.1.0:*:*:*:*:*:*:* Versions 1.1.0 Vulnerable ·Cisco
- cpe:2.3:h:cisco:netflow_generation_appliance_3140:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:netflow_generation_appliance_3240:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
- cpe:2.3:h:cisco:netflow_generation_appliance_3340:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Cisco
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-3826
- 2026-10-03 Alias added: GHSA-6m6f-4vpp-rg9h
References
Sources
- CVE-2017-3826 · CVE Program
- CVE-2017-3826 · NVD
- FIRST EPSS
- GHSA-6m6f-4vpp-rg9h · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences