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CVE-2017-9487

5.9 · MEDIUM

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) and DPC3941T (firmware version DPC3941_2.5s3_PROD_sey) devices allows remote attackers to discove…

Published Jul 31, 2017CWE-200EPSS 1.17%

Overview

CVE-2017-9487 is a medium-severity vulnerability. It was published on July 31, 2017 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

The Comcast firmware on Cisco DPC3939 (firmware version dpc3939-P20-18-v303r20421746-170221a-CMCST) and DPC3941T (firmware version DPC3941_2.5s3_PROD_sey) devices allows remote attackers to discover a WAN IPv6 IP address by leveraging knowledge of the CM MAC address.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-30.wan0-ipv6-cm-mac.txtGitHubgithub.com/BastilleResearch/CableTap/blob/master/doc/advisories/bastille-30.wan0-ipv6-cm-mac.txt

How CyberStrike helps

Frequently asked questions

What is CVE-2017-9487?

CVE-2017-9487 is a medium-severity vulnerability. It was published on July 31, 2017 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

How severe is CVE-2017-9487?

This vulnerability has a CVSS 3.0 base score of 5.9, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2017-9487?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2017-9487?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2017-9487 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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