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CVE-2018-5737

5.9 · MEDIUM

A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off.

Published Jan 16, 2019CWE-617EPSS 10.44%

Overview

CVE-2018-5737 is a medium-severity vulnerability. It was published on January 16, 2019 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

A problem with the implementation of the new serve-stale feature in BIND 9.12 can lead to an assertion failure in rbtdb.c, even when stale-answer-enable is off. Additionally, problematic interaction between the serve-stale feature and NSEC aggressive negative caching can in some cases cause undesirable behavior from named, such as a recursion loop or excessive logging. Deliberate exploitation of this condition could cause operational problems depending on the particular manifestation -- either degradation or denial of service. Affects BIND 9.12.0 and 9.12.1.

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.securityfocus.com/bid/104236Refwww.securitytracker.com/id/1040942Refkb.isc.org/docs/aa-01606Refsecurity.netapp.com/advisory/ntap-20180926-0004/Refwww.securityfocus.com/bid/104236Refwww.securitytracker.com/id/1040942Refkb.isc.org/docs/aa-01606Refsecurity.netapp.com/advisory/ntap-20180926-0004/

How CyberStrike helps

Frequently asked questions

What is CVE-2018-5737?

CVE-2018-5737 is a medium-severity vulnerability. It was published on January 16, 2019 and has a CVSS 3.0 base score of 5.9 (MEDIUM).

How severe is CVE-2018-5737?

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-2018-5737?

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-2018-5737?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2018-5737 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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