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CVE-2020-8619

MEDIUMCVSS 4.9/10EPSS 2.09%

Last modified

CVE-2020-8619 is a medium-severity vulnerability rated 4.9/10 on the CVSS scale. In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk ("*") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.. EPSS estimates a 2.09% chance of exploitation in the next 30 days.

Description

In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk ("*") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.

Metrics

CVSS 3.1
4.9/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
2.09%

79.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
IscBind>= 9.11.14, <= 9.11.19
IscBind>= 9.11.14-s1, <= 9.11.19-s1
IscBind>= 9.14.9, <= 9.14.12
IscBind>= 9.16.0, <= 9.16.3
FedoraprojectFedora31
FedoraprojectFedora32
OpensuseLeap15.1
OpensuseLeap15.2
DebianDebian Linux10.0
CanonicalUbuntu Linux20.04
NetappSteelstore Cloud Integrated StorageAll versions

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-8619?
In ISC BIND9 versions BIND 9.11.14 -> 9.11.19, BIND 9.14.9 -> 9.14.12, BIND 9.16.0 -> 9.16.3, BIND Supported Preview Edition 9.11.14-S1 -> 9.11.19-S1: Unless a nameserver is providing authoritative service for one or more zones and at least one zone contains an empty non-terminal entry containing an asterisk ("*") character, this defect cannot be encountered. A would-be attacker who is allowed to change zone content could theoretically introduce such a record in order to exploit this condition to cause denial of service, though we consider the use of this vector unlikely because any such attack would require a significant privilege level and be easily traceable.
How severe is CVE-2020-8619?
CVE-2020-8619 has a CVSS score of 4.9/10 (MEDIUM severity). The EPSS model estimates a 2.09% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8619?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-8619?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST