CVE-2018-0241

Description

A vulnerability in the UDP broadcast forwarding function of Cisco IOS XR Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on the affected device. The vulnerability is due to improper handling of UDP broadcast packets that are forwarded to an IPv4 helper address. An attacker could exploit this vulnerability by sending multiple UDP broadcast packets to the affected device. An exploit could allow the attacker to cause a buffer leak on the affected device, eventually resulting in a DoS condition requiring manual intervention to recover. This vulnerability affects all Cisco IOS XR platforms running 6.3.1, 6.2.3, or earlier releases of Cisco IOS XR Software when at least one IPv4 helper address is configured on an interface of the device. Cisco Bug IDs: CSCvi35625.

Category

7.4
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.30%
Vendor Advisory cisco.com
Affected: n/a Cisco IOS XR
Published at:
Updated at:

References

Link Tags
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180418-iosxr vendor advisory
http://www.securitytracker.com/id/1040710 vdb entry third party advisory
http://www.securityfocus.com/bid/103929 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-0241?
CVE-2018-0241 has been scored as a high severity vulnerability.
How to fix CVE-2018-0241?
To fix CVE-2018-0241, 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-2018-0241 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-0241 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-2018-0241?
CVE-2018-0241 affects n/a Cisco IOS XR.
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