cisco-sa-sbss-ipv6-dos-tsgqbffW

csafUScisco_csaf

Cisco Small Business Smart and Managed Switches Denial of Service Vulnerability

view advisory published 2020-08-19

A vulnerability in the IPv6 packet processing engine of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of incoming IPv6 traffic. An attacker could exploit this vulnerability by sending a crafted IPv6 packet through an affected device. A successful exploit could allow the attacker to cause the switch management CLI to stop responding, resulting in a DoS condition. This vulnerability is specific to IPv6 traffic. IPv4 traffic is not affected. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbss-ipv6-dos-tsgqbffW ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sbss-ipv6-dos-tsgqbffW"]

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describes (1)

Related CVEs.

IDseverity exploitable
CVE-2020-3496USmedium5.3—
A vulnerability in the IPv6 packet processing engine of Cisco Small Business Smart and Managed Switches could allow an unauthenticated, remote attacker to cause a denial of service…
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references

External citations — patches, advisories, analysis.

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remediations (1)

  • FixedCisco Small Business 250 Series Smart Switches Software

    Cisco has released software updates that address this vulnerability.

    https://software.cisco.com
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