Cisco FXOS/UCS Fabric Interconnect Software Web UI HTTP Packet memory corruption

Summaryinfo

A vulnerability categorized as critical has been discovered in Cisco FXOS and UCS Fabric Interconnect Software. The impacted element is an unknown function of the component Web UI. Executing a manipulation as part of HTTP Packet can lead to memory corruption. The identification of this vulnerability is CVE-2018-0298. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical was found in Cisco FXOS and UCS Fabric Interconnect Software (Virtualization Software) (affected version unknown). This vulnerability affects an unknown functionality of the component Web UI. The manipulation as part of a HTTP Packet leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability in the web UI of Cisco FXOS and Cisco UCS Fabric Interconnect Software could allow an unauthenticated, remote attacker to cause a buffer overflow on an affected system. The vulnerability is due to incorrect input validation in the web UI. An attacker could exploit this vulnerability by sending a malicious HTTP or HTTPS packet directed to the physical management interface of an affected system. A successful exploit could allow the attacker to cause the process to crash and possibly reload the device, resulting in a denial of service (DoS) condition on the affected system. This vulnerability affects Firepower 4100 Series Next-Generation Firewall, Firepower 9300 Security Appliance, UCS 6200 Series Fabric Interconnects, UCS 6300 Series Fabric Interconnects. Cisco Bug IDs: CSCvb61398, CSCvb86799.

The bug was discovered 06/20/2018. The weakness was shared 06/21/2018 as cisco-sa-20180620-fxos-dos / CSCvb86799 as confirmed advisory (Website). The advisory is shared for download at tools.cisco.com. This vulnerability was named CVE-2018-0298 since 11/27/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/21/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

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

The entry VDB-119767 is related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

• Virtualization Software

Vendor

• Cisco

Name

• FXOS
• UCS Fabric Interconnect Software

License

• commercial

Website

• Vendor: https://www.cisco.com/

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Once again VulDB remains the best source for vulnerability data.

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