CVE-2017-6678

Description

A vulnerability in the ingress UDP packet processing functionality of Cisco Virtualized Packet Core-Distributed Instance (VPC-DI) Software 19.2 through 21.0 could allow an unauthenticated, remote attacker to cause both control function (CF) instances on an affected system to reload, resulting in a denial of service (DoS) condition. The vulnerability is due to insufficient handling of user-supplied data by the affected software. An attacker could exploit this vulnerability by sending crafted UDP packets to the distributed instance (DI) network addresses of both CF instances on an affected system. A successful exploit could allow the attacker to cause an unhandled error condition on the affected system, which would cause the CF instances to reload and consequently cause the entire VPC to reload, resulting in the disconnection of all subscribers and a DoS condition on the affected system. This vulnerability can be exploited via IPv4 traffic only. Cisco Bug IDs: CSCvc01665 CSCvc35565.

Categories

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.48%
Vendor Advisory cisco.com
Affected: n/a Cisco Virtualized Packet Core-Distributed Instance
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/99195 vdb entry third party advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170621-vpc vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-6678?
CVE-2017-6678 has been scored as a high severity vulnerability.
How to fix CVE-2017-6678?
To fix CVE-2017-6678, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-6678 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2017-6678 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-6678?
CVE-2017-6678 affects n/a Cisco Virtualized Packet Core-Distributed Instance.
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