Cisco Cyber Vision Snort SMB2 Detection Engine Policy heap inspection

Summaryinfo

A vulnerability was found in Cisco Cyber Vision, FirePOWER Services, Firepower Threat Defense, Meraki MX Security Appliance and Umbrella Secure Internet Gateway and classified as problematic. This issue affects some unknown processing of the component Snort SMB2 Detection Engine Policy. The manipulation results in heap inspection. This vulnerability is cataloged as CVE-2022-20922. The attack may be launched remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as problematic, was found in Cisco Cyber Vision, FirePOWER Services, Firepower Threat Defense, Meraki MX Security Appliance and Umbrella Secure Internet Gateway (Firewall Software). Affected is an unknown code of the component Snort SMB2 Detection Engine Policy. The manipulation with an unknown input leads to a heap inspection vulnerability. CWE is classifying the issue as CWE-244. Using realloc() to resize buffers that store sensitive information can leave the sensitive information exposed to attack, because it is not removed from memory. This is going to have an impact on availability. CVE summarizes:

Multiple vulnerabilities in the Server Message Block Version 2 (SMB2) processor of the Snort detection engine on multiple Cisco products could allow an unauthenticated, remote attacker to bypass the configured policies or cause a denial of service (DoS) condition on an affected device. These vulnerabilities are due to improper management of system resources when the Snort detection engine is processing SMB2 traffic. An attacker could exploit these vulnerabilities by sending a high rate of certain types of SMB2 packets through an affected device. A successful exploit could allow the attacker to trigger a reload of the Snort process, resulting in a DoS condition. Note: When the snort preserve-connection option is enabled for the Snort detection engine, a successful exploit could also allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network. The snort preserve-connection setting is enabled by default. See the Details ["#details"] section of this advisory for more information. Note: Only products that have Snort 3 configured are affected. Products that are configured with Snort 2 are not affected.

The weakness was shared 11/09/2022 as cisco-sa-snort-smb-3nfhJtr. The advisory is available at tools.cisco.com. This vulnerability is traded as CVE-2022-20922 since 11/02/2021. The technical details are unknown and an exploit is not available.

Upgrading eliminates this vulnerability.

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Productinfo

Type

• Firewall Software

Vendor

• Cisco

Name

• Cyber Vision
• FirePOWER Services
• Firepower Threat Defense
• Meraki MX Security Appliance
• Umbrella Secure Internet Gateway

License

• commercial

Website

• Vendor: https://www.cisco.com/

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