CVE-2020-3385: Cisco SD-WAN vEdge Routers Denial of Service Vulnerability
First published: Thu Jul 16 2020(Updated: )
A vulnerability in the deep packet inspection (DPI) engine of Cisco SD-WAN vEdge Routers could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected system. The vulnerability is due to insufficient handling of malformed packets. An attacker could exploit this vulnerability by sending crafted packets through an affected device. A successful exploit could allow the attacker to cause the device to reboot, resulting in a DoS condition.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Sd-wan Firmware | <=18.3.0 | |
| Cisco Sd-wan Firmware | >=18.4.0<18.4.5 | |
| Cisco Sd-wan Firmware | >=19.2.0<19.2.3 | |
| Cisco Sd-wan Firmware | >=19.3.0<20.1.1 | |
| Cisco Vedge 5000 | ||
| Cisco Vedge Cloud Router |
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Reference Links
Frequently Asked Questions
What is CVE-2020-3385?
CVE-2020-3385 is a vulnerability in the deep packet inspection (DPI) engine of Cisco SD-WAN vEdge Routers.
How does CVE-2020-3385 affect Cisco SD-WAN vEdge Routers?
CVE-2020-3385 allows an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected system.
What causes CVE-2020-3385?
CVE-2020-3385 is caused by insufficient handling of malformed packets by the deep packet inspection (DPI) engine.
Which versions of Cisco SD-WAN firmware are affected by CVE-2020-3385?
Cisco SD-WAN firmware versions 18.3.0, 18.4.0 - 18.4.5, 19.2.0 - 19.2.3, and 19.3.0 - 20.1.1 are affected by CVE-2020-3385.
How can CVE-2020-3385 be fixed?
Cisco has released a security advisory with detailed instructions on how to mitigate the vulnerability. Please refer to the advisory for specific remediation steps.
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- version/cisco sd-wan firmware/19.3.0
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- canonical/cisco vedge cloud router