A vulnerability was found in Cisco Unified IP Conference Station 7937G up to 1.4.5.7. It has been rated as critical. This issue affects some unknown functionality. 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:

** UNSUPPORTED WHEN ASSIGNED ** A denial-of-service issue in Cisco Unified IP Conference Station 7937G 1-4-4-0 through 1-4-5-7 allows attackers to remotely disable the device until it is power cycled. Note: We cannot prove this vulnerability exists. Out of an abundance of caution, this CVE is being assigned to better serve our customers and ensure all who are still running this product understand that the product is end of life and should be removed or upgraded. For more information on this, and how to upgrade, refer to the CVE’s reference information.

The weakness was shared 08/12/2020 by Cody Martin (debifrank) with Black Lantern Security (Website). The advisory is shared at blacklanternsecurity.com. The identification of this vulnerability is CVE-2020-16138 since 07/29/2020. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Cody Martin (debifrank) and been published even before and not after the advisory. The exploit is available at github.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $0-$5k. The real existence of this vulnerability is still doubted at the moment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The entries 159748 and 159750 are related to this item.

Productinfo

Vendor

• Cisco

Name

• Unified IP Conference Station 7937G

Version

• 1.4.5.0
• 1.4.5.1
• 1.4.5.2
• 1.4.5.3
• 1.4.5.4
• 1.4.5.5
• 1.4.5.6
• 1.4.5.7

License

• commercial

Support

• end of life

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

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