Cisco Smart Switch/Small Business Switch up to 2.5.5.47 input validation

Summaryinfo

A vulnerability marked as problematic has been reported in Cisco Smart Switch and Small Business Switch up to 2.5.5.47. Affected is an unknown function. The manipulation leads to input validation. This vulnerability is referenced as CVE-2020-3496. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Cisco Smart Switch and Small Business Switch up to 2.5.5.47 and classified as problematic. This issue affects an unknown code. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

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.

The weakness was published 08/19/2020 as cisco-sa-sbss-ipv6-dos-tsgqbff as confirmed advisory (Website). It is possible to read the advisory at tools.cisco.com. The identification of this vulnerability is CVE-2020-3496. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

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Productinfo

Vendor

• Cisco

Name

• Small Business Switch
• Smart Switch

Version

• 2.5.5.0
• 2.5.5.1
• 2.5.5.2
• 2.5.5.3
• 2.5.5.4
• 2.5.5.5
• 2.5.5.6
• 2.5.5.7
• 2.5.5.8
• 2.5.5.9
• 2.5.5.10
• 2.5.5.11
• 2.5.5.12
• 2.5.5.13
• 2.5.5.14
• 2.5.5.15
• 2.5.5.16
• 2.5.5.17
• 2.5.5.18
• 2.5.5.19
• 2.5.5.20
• 2.5.5.21
• 2.5.5.22
• 2.5.5.23
• 2.5.5.24
• 2.5.5.25
• 2.5.5.26
• 2.5.5.27
• 2.5.5.28
• 2.5.5.29
• 2.5.5.30
• 2.5.5.31
• 2.5.5.32
• 2.5.5.33
• 2.5.5.34
• 2.5.5.35
• 2.5.5.36
• 2.5.5.37
• 2.5.5.38
• 2.5.5.39
• 2.5.5.40
• 2.5.5.41
• 2.5.5.42
• 2.5.5.43
• 2.5.5.44
• 2.5.5.45
• 2.5.5.46
• 2.5.5.47

License

• commercial

Website

• Vendor: https://www.cisco.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

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