CVE-2020-8619
Published: 17 June 2020
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.
Notes
| Author | Note |
|---|---|
| mdeslaur | upstream advisory says BIND 9.11.14 -> 9.11.19, probably introduced in race condition fixes introduced in 9.11.4. |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
bind9 Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(1:9.11.3+dfsg-1ubuntu1.12)
|
| eoan |
Not vulnerable
(1:9.11.5.P4+dfsg-5.1ubuntu2.2)
|
|
| focal |
Released
(1:9.16.1-0ubuntu2.2)
|
|
| trusty |
Not vulnerable
|
|
| upstream |
Released
(9.11.20,9.16.4)
|
|
| xenial |
Not vulnerable
(1:9.10.3.dfsg.P4-8ubuntu1.16)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.9 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | High |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H |