PT-2019-3171 · Cisco · Cisco Sd-Wan Solution

Published 2019-08-07 · Updated 2020-10-16 · CVE-2019-1951

Positive Technologies (AI Summary)

CVSS v3.1

5.8

Medium

Base vector

AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions Cisco SD-WAN Solution (affected versions not specified)

Description The issue is related to insufficient input validation in the traffic filtering component of Cisco SD-WAN Solution. This could allow a remote attacker to bypass L2 and L4 traffic filters by sending a specially crafted TCP packet. The vulnerability is due to improper traffic filtering conditions on an affected device, which could be exploited by crafting a malicious TCP packet with specific characteristics. A successful exploit could allow the attacker to bypass traffic filters and potentially inject arbitrary packets into the network.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2019-03160

CVE-2019-1951

Affected Products

Cisco Sd-Wan Solution

References · 4

• https://bdu.fstec.ru/vul/2019-03160 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2019-1951 · Security Note
• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190807-sd-wan-bypass · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-1951 · Vendor Advisory