CVE-2021-1394 Detail
Current Description
A vulnerability in the ingress traffic manager of Cisco IOS XE Software for Cisco Network Convergence System (NCS) 520 Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition in the web management interface of an affected device. This vulnerability is due to incorrect processing of certain IPv4 TCP traffic that is destined to an affected device. An attacker could exploit this vulnerability by sending a large number of crafted TCP packets to the affected device. A successful exploit could allow the attacker to cause the web management interface to become unavailable, resulting in a DoS condition. Note: This vulnerability does not impact traffic that is going through the device or going to the Management Ethernet interface of the device.
Analysis Description
A vulnerability in the ingress traffic manager of Cisco IOS XE Software for Cisco Network Convergence System (NCS) 520 Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition in the web management interface of an affected device. This vulnerability is due to incorrect processing of certain IPv4 TCP traffic that is destined to an affected device. An attacker could exploit this vulnerability by sending a large number of crafted TCP packets to the affected device. A successful exploit could allow the attacker to cause the web management interface to become unavailable, resulting in a DoS condition. Note: This vulnerability does not impact traffic that is going through the device or going to the Management Ethernet interface of the device.
Severity
References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-399 | Resource Management Errors | Cisco Systems, Inc. |
Change History
2 change records found show changes
Initial Analysis 3/29/2021 5:50:08 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Added | CPE Configuration | Record truncated, showing 500 of 520 characters. View Entire Change Record OR
*cpe:2.3:o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.10.1a:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.10.1b:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.10.1c:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.10.1d:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.10.1e:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.10.1f:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.10.1g:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:16.10.1s:*:*:*:*:*:*:*
*cpe:2.3:o:cisco:ios_xe:1
|
|
| Added | CVSS V2 |
NIST (AV:N/AC:M/Au:N/C:N/I:N/A:P) |
|
| Added | CVSS V3.1 |
NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
|
| Changed | Reference Type |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs520-tcp-ZpzzOxB No Types Assigned |
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ncs520-tcp-ZpzzOxB Vendor Advisory |
CVE Modified by Cisco Systems, Inc. 3/24/2021 5:15:13 PM
| Action | Type | Old Value | New Value |
|---|---|---|---|
| Changed | Description | Record truncated, showing 500 of 796 characters. View Entire Change Record A vulnerability in the ingress traffic manager of Cisco IOS XE Software for Cisco Network Convergence System (NCS) 520 Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition in the web management interface of an affected device. This vulnerability is due to incorrect processing of certain IPv4 TCP traffic that is destined to an affected device. An attacker could exploit this vulnerability by sending a large number of crafted TCP packets to the aff |
Record truncated, showing 500 of 790 characters. View Entire Change Record A vulnerability in the ingress traffic manager of Cisco IOS XE Software for Cisco Network Convergence System (NCS) 520 Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition in the web management interface of an affected device. This vulnerability is due to incorrect processing of certain IPv4 TCP traffic that is destined to an affected device. An attacker could exploit this vulnerability by sending a large number of crafted TCP packets to the affect |
Quick Info
CVE Dictionary Entry:
CVE-2021-1394
NVD Published Date:
03/24/2021
NVD Last Modified:
03/29/2021
Source:
Cisco Systems, Inc.