isc bind CVE-2020-8619 vulnerability in ISC and Other Products
Published on June 17, 2020

A buffer boundary check assertion in rdataset.c can fail incorrectly during zone transfer

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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.

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Vulnerability Analysis

CVE-2020-8619 can be exploited with network access, and requires user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity, and a high impact on availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
HIGH
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Products Associated with CVE-2020-8619

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2020-8619 are published in these products:

ISC BIND
 
Fedora Project Fedora
 
OpenSuse Leap
 
Debian Linux
 
Canonical Ubuntu Linux
 
NetApp Steelstore Cloud Integrated Storage
 

Affected Versions

ISC BIND9:

Exploit Probability

EPSS
6.93%
Percentile
91.23%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.