Loading...
Loading...
A vulnerability in the packet filtering features of Cisco SD-WAN Software could allow an unauthenticated, remote attacker to bypass L3 and L4 traffic filters. The vulnerability is due to improper traffic filtering conditions on an affected device. An attacker could exploit this vulnerability by crafting a malicious packet with specific characteristics and sending it to a targeted device. A successful exploit could allow the attacker to bypass the L3 and L4 traffic filters and inject an arbitrary packet into the network. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-cedge-filt-bypass-Y6wZMqm4
At the time of publication, this vulnerability affected the universal Cisco IOS XE Software releases 17.2.1r and later running in Controller mode. Cisco IOS XE Software releases earlier than the 17.2.1r release are not affected by this vulnerability because they do not include the SD-WAN feature. At the time of publication, this vulnerability affected the following standalone Cisco IOS XE SD-WAN Software releases: 16.9.1 through 16.9.4, 16.10.1 through 16.10.5, 16.11.1a, and 16.12.2r through 16.12.4.
Please refer to the Security Advisory. Fix was committed to 17.6.1, 17.5.1, 17.4.2, 17.3.4 and onwards on each train.
Please refer to the Security Advisory.
The Cisco PSIRT has assigned this bug the following CVSS version 3 score. The Base CVSS score as of the time of evaluation is 5.8: https://tools.cisco.com/security/center/cvssCalculator.x?vector=CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N CVE ID CVE-2020-3444 has been assigned to document this issue. Information about Fixed, Vulnerable, and Nonvulnerable releases--as well as information about fixed release availability--is not maintained by Cisco PSIRT. Please refer to the appropriate fields in this bug. If you require additional help to obtain this information, please open a support case with your support organization. Additional information on Cisco's security vulnerability policy can be found at the following URL: http://www.cisco.com/en/US/products/products_security_vulnerability_policy.html
Click on a version to see all relevant bugs
Cisco Integration
Learn more about where this data comes from
Bug Scrub Advisor
Streamline upgrades with automated vendor bug scrubs
BugZero Enterprise
Wish you caught this bug sooner? Get proactive today.