CVE-2019-25036: High severity unbound vulnerability

Published Apr 27, 2021
·
Updated

DISPUTED Unbound before 1.9.5 allows an assertion failure and denial of service in synthcname. NOTE: The vendor disputes that this is a vulnerability. Although the code may be vulnerable, a running Unbound installation cannot be remotely or locally exploited.

Affected Software

2 affected components
nlnetlabs Unbound<1.9.5
Debian Debian Linux=9.0

Event History

Apr 27, 2021
CVE Published
via MITRE·05:17 AM
Data Sourced
via MITRE·05:17 AM
Description
Disputed
06:15 AM

Frequently Asked Questions

1

What is CVE-2019-25036?

CVE-2019-25036 is a vulnerability in Unbound DNS software before version 1.9.5 that allows an assertion failure and denial of service in synth_cname.

2

Is CVE-2019-25036 considered a vulnerability?

Although the vendor disputes that this is a vulnerability, the code may still be vulnerable, resulting in denial of service in a running Unbound installation.

3

What is the severity level of CVE-2019-25036?

CVE-2019-25036 has a severity level of high with a CVSS score of 7.5.

4

What software is affected by CVE-2019-25036?

Unbound DNS software before version 1.9.5 and Debian Linux version 9.0 are affected by CVE-2019-25036.

5

How can I mitigate the risk of CVE-2019-25036?

Updating the Unbound DNS software to version 1.9.5 or higher is recommended to mitigate the risk of CVE-2019-25036.

Contact

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