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CVE-2016-6170

6.5 · MEDIUM

ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS servers to cause a denial of service (secondary DNS server crash) via a large AXFR response, and…

Published Jul 6, 2016CWE-20EPSS 40.94%

Overview

CVE-2016-6170 is a medium-severity vulnerability. It was published on July 6, 2016 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

ISC BIND through 9.9.9-P1, 9.10.x through 9.10.4-P1, and 9.11.x through 9.11.0b1 allows primary DNS servers to cause a denial of service (secondary DNS server crash) via a large AXFR response, and possibly allows IXFR servers to cause a denial of service (IXFR client crash) via a large IXFR response and allows remote authenticated users to cause a denial of service (primary DNS server crash) via a large UPDATE message.

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

Refwww.openwall.com/lists/oss-security/2016/07/06/3Refwww.securityfocus.com/bid/91611Refwww.securitytracker.com/id/1036241Refbugzilla.redhat.com/show_bug.cgi?id=1353563GitHubgithub.com/sischkg/xfer-limit/blob/master/README.mdRefkb.isc.org/article/AA-01390Refkb.isc.org/article/AA-01390/169/CVE-2016-6170Reflists.dns-oarc.net/pipermail/dns-operations/2016-July/015058.htmlReflists.dns-oarc.net/pipermail/dns-operations/2016-July/015073.htmlReflists.dns-oarc.net/pipermail/dns-operations/2016-July/015075.html

How CyberStrike helps

Frequently asked questions

What is CVE-2016-6170?

CVE-2016-6170 is a medium-severity vulnerability. It was published on July 6, 2016 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2016-6170?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2016-6170?

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-2016-6170?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2016-6170 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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