8.6
CVE-2020-26070
- EPSS 1.9%
- Veröffentlicht 12.11.2020 02:15:11
- Zuletzt bearbeitet 21.11.2024 05:19:10
- Erkennungen
LoginCisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers Slow Path Forwarding Denial of Service Vulnerability
A vulnerability in the ingress packet processing function of Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper resource allocation when an affected device processes network traffic in software switching mode (punted). An attacker could exploit this vulnerability by sending specific streams of Layer 2 or Layer 3 protocol data units (PDUs) to an affected device. A successful exploit could cause the affected device to run out of buffer resources, which could make the device unable to process or forward traffic, resulting in a DoS condition. The device would need to be restarted to regain functionality.
| Typ | Quelle | Score | Percentile |
|---|---|---|---|
| EPSS | FIRST.org | 1.9% | 0.777 |
| Quelle | Base Score | Exploit Score | Impact Score | Vector String |
|---|---|---|---|---|
| NIST | 8.6 | 3.9 | 4 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
|
| NIST | 7.8 | 10 | 6.9 |
AV:N/AC:L/Au:N/C:N/I:N/A:C
|
| Cisco PSIRT | 8.6 | 3.9 | 4 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
|
CWE-404 Improper Resource Shutdown or Release
The product does not release or incorrectly releases a resource before it is made available for re-use.
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-xr-cp-dos-ej8VB9QY